Browse tools

Remove the background from a photo automatically.

Convert one or many iPhone HEIC photos to JPG, right in your browser — no app or upload needed.

Upload the front and back photos of your Aadhaar or any ID card and combine them onto a single printable page, ready as JPG or PDF.

Convert between JPG, PNG and WebP, or SVG to PNG.

Convert an image to a Base64 data URL.

Rotate a photo by 90, 180 or 270 degrees, or flip it.

Blur an entire image or a selected area.

Add a text or logo watermark to a photo.

Check an image's DPI and print dimensions.

Check the pixel width, height and aspect ratio of an image.

Pull the dominant colours out of any photo.

Strip location and camera metadata from a photo before sharing it.

Crop and format a passport-size photo to any dimensions you need.

Crop and format a visa photo to any dimensions you need.

Crop and resize a photo into a perfect circular or square profile picture.

Resize a signature photo to the exact KB and dimensions exam and job forms need.

Compare two images side by side or with a slider to spot differences.

Convert every page of a PDF into a high-quality JPG image and download them all as a ZIP. Free and private.

Convert every page of a PDF into a sharp PNG image and download them all as a ZIP. Free and private.

Extract all the text from a PDF and copy it or save it as a .txt file. Free, private, and nothing is uploaded.

Turn a PDF into an editable Word (.docx) file with its text, headings and table rows, right in your browser — nothing is uploaded.

Pull text and simple tables from a PDF into an Excel (.xlsx) workbook, one sheet per page, in your browser with no upload.

Convert a Word document (.docx, .doc, .odt, .rtf) into a PDF that looks the same on every device. Files are deleted right after conversion.

Convert an Excel spreadsheet (.xlsx, .xls, .ods, .csv) into a PDF. Files are deleted right after conversion.

Convert a PowerPoint presentation (.pptx, .ppt, .odp) into a PDF with one slide per page. Files are deleted right after conversion.

Convert PNG images, such as screenshots, into one PDF with your choice of page size. Free, private and watermark-free.

Rotate all or selected pages of a PDF by 90°, 180° or 270° and save it permanently. Free and private.

See thumbnails of every page and move them into a new order, then save the rearranged PDF. Free and private.

Pull out just the pages you need from a PDF and save them as a new file. Free, private, and no sign-up.

Delete unwanted pages from a PDF and download the cleaned file. Free, private and works right in your browser.

Add page numbers to any PDF. Choose the position, format and starting number. Free and private.

Stamp a text watermark such as CONFIDENTIAL or DRAFT across every page of a PDF. Free and private.

Lock a PDF with a password so only people who know it can open it, and choose whether they can print, copy or edit. Private and in your browser.

Remove the password or the print, copy and edit limits from a PDF you own, when you know the password. Private and in your browser.

See and remove the hidden author, title and software details stored inside a PDF before you share it. Free and private.

Read the text in a scanned PDF and get copyable text plus a searchable PDF. Supports English, Hindi and Gujarati, right in your browser.

Draw your signature with a finger or mouse and place it on your PDF. Free, with no sign-up and no upload.

Fill in the text boxes, checkboxes and dropdowns of a fillable PDF form and save it. Free and private.

Black out names, numbers and other private details in a PDF. Redacted pages are flattened so the hidden text is truly gone. Private and in your browser.

Compare the text of two PDFs side by side and see exactly which lines were added, removed or changed. Free and private.

Turn photos of paper pages into a clean, brighter or black-and-white PDF scan. Use your phone camera. Private and in your browser.

Find and replace text, with plain text or regex matching, case sensitivity and a live match count.

Reverse text by character, word or line.

Generate placeholder Lorem Ipsum text by word, sentence or paragraph.

Generate random full names for testing, writing or placeholder data.

Turn a list of lines into an interactive, printable checklist.

Build a clean HTML email signature with your name, title and contact details, ready to paste into your email client.

Convert a Unix timestamp to a human-readable date and time, or a date back to epoch seconds and milliseconds, with the current timestamp live.

Find the exact number of years, months, weeks and days between any two dates.

Estimate your due date and current week of pregnancy from your last period or conception date.

Find the final price and the amount you save after any percentage discount, instantly.

Convert a rupee amount into words using the Indian numbering system.

Calculate your Body Mass Index from height and weight, and see which category it falls into.

Calculate your Basal Metabolic Rate and daily calorie needs based on your activity level.

Free body fat calculator: enter age, height, weight, neck and waist (and hip for women) to see your body fat percentage, category, fat mass and lean mass on a meter.

Estimate a healthy ideal weight range for your height and sex using the Devine formula.

Calculate your running or walking pace per kilometre and speed from distance and time.

Estimate the likely conception date from your last period or from an already-known due date.

A full scientific calculator with trigonometric, logarithmic and power functions.

Add, subtract, multiply and divide fractions, with the result automatically simplified.

Generate one or many random numbers within any range, with an option to avoid duplicates.

Solve a triangle's angles and area from its three side lengths.

Calculate mean, median, mode, variance and standard deviation for a data set.

Add or subtract hours, minutes and seconds across multiple rows to get a running total.

Calculate hours worked between a start and end time, minus a break.

Calculate your grade point average from each course's grade and credits.

Work out the grade needed on a final exam to reach a target overall grade.

Estimate concrete volume needed for a slab, footing or column, in cubic feet, yards or metres.

Work out a tip amount and per-person split for any bill.

Split a bill evenly between any number of people.

Calculate profit and margin from cost price and selling price.

Calculate profit margin percentage from cost and revenue.

Calculate a selling price from cost and a target markup percentage.

Simplify any ratio to its lowest terms.

Calculate the mean, median and mode of a data set.

Calculate the combined probability of independent events happening together or either happening.

Find the lowest common multiple of a set of numbers.

Find the greatest common divisor (HCF) of a set of numbers.

Check whether a number is prime, and see its prime factors if not.

Calculate the factorial of any whole number from 0 to 170.

Calculate the square root and cube root of any number.

Solve any quadratic equation ax² + bx + c = 0 and see the discriminant and roots.

Roll one or many virtual dice (d4 to d20), or flip a coin.

See the current live time in multiple time zones side by side, and add or remove cities.

Convert any date and time between time zones, with your zone detected automatically and your choices remembered.

A simple countdown timer and stopwatch, right in your browser.

A focus timer using the Pomodoro technique — 25 minutes of focus, 5 minutes of break.

Count business days between two dates, excluding weekends.

Find the ISO 8601 week number for any date.

Count the days, weeks and working days left until any date — a trip, a deadline or a festival.

Find out how many days, months and years have passed since any date.

Find how many days are left until your next birthday and the age you will turn.

Count the days, weeks and working days left until your wedding.

Count down to any event — a launch, a trip or a party — in days, weeks, working days and hours.

Count the days left to your exam, with weeks and working days, so you can plan your revision.

Add or subtract years, months and days to any date and see the resulting date and weekday.

Find the best bedtime or wake-up time using 90-minute sleep cycles.

Find your last working day and the buyout amount from your resignation date and notice period.

Work out your leave balance from your yearly entitlement, months worked, leaves taken and carry-forward.

Add up working hours across days from start and end times and breaks, with overtime and pay.

Calculate your CGPA from semester SGPAs and credits, and convert it to an approximate percentage.

Add up marks across subjects and get your total, percentage and result band.

Check your attendance percentage, how many classes you can still miss, or how many you must attend to reach the required level.

Turn the number of chapters, hours per chapter and days left into a daily study plan with revision time.

Paste any text and find out how long it takes to read and to speak aloud, with word and character counts.

Create APA 7 or MLA 9 citations for a website, book or journal article from the details you enter.

Estimate the calories you burn per day (TDEE) from your age, height, weight and activity level.

Find how many calories to eat each day to maintain, lose or gain weight at a safe pace.

Estimate how much water you need each day from your weight, exercise and the weather.

Turn your daily calories into grams of protein, carbohydrates and fat using a balanced, high-protein or lower-carb split.

Find your daily protein need in grams based on your weight and activity.

Convert steps into kilometres and estimated calories burned using your height and weight.

Estimate calories burned during walking, running, cycling, yoga, gym and other activities from your weight and time.

Work out the volumetric and chargeable weight of a parcel and its shipping cost.

Calculate the current run rate and projected score from runs scored and overs bowled.

Find the required run rate, runs needed and balls left to chase a target in a T20, ODI or any match.

Calculate a team's net run rate (NRR) from runs scored, overs faced, runs conceded and overs bowled.

Calculate a batter's strike rate, runs per over and balls per run.

Calculate a bowler's economy rate, bowling average and strike rate.

Calculate a batting average from runs, innings and not outs.

Create a full round-robin schedule where every team plays every other team, single or home-and-away.

Build a knockout tournament bracket with seeding and byes for any number of teams.

Split your wedding budget across venue, catering, clothes, photography and more, with the cost per guest.

Divide an event budget across venue, catering, decor, entertainment and more, with the cost per guest.

Enter any two of voltage, current, resistance and power to find the other two.

Calculate voltage from current and resistance, or from power and current.

Calculate electric current (amps) from voltage and resistance, or from power and voltage.

Calculate resistance in ohms from voltage and current, or from power and current.

Calculate real, apparent and reactive power from voltage, current and power factor, single or three phase.

Calculate energy used in kWh (units) and its cost from power, hours and the rate per unit.

Find how long a battery will power your load from its Ah, voltage, usable charge and efficiency.

Find the turns ratio, secondary turns and primary and secondary currents of a transformer.

Calculate the area of a rectangle, square, triangle, circle, trapezoid, parallelogram or ellipse.

Calculate the volume of a cuboid, cube, cylinder, sphere, cone or pyramid in litres and cubic metres.

Estimate roof area and the number of sheets or tiles from the building size, pitch and overhang.

Calculate how much sand you need for an area and thickness, in cubic feet, cubic metres, tonnes and brass.

Convert between Celsius, Fahrenheit, Kelvin and Rankine.

Convert wind speed between km/h, m/s, mph and knots, with the Beaufort scale description.

Find sunrise, sunset, solar noon and twilight times for Indian cities or any coordinates.

See how long daylight lasts in any city on any date, and how it changed since yesterday.

Find the golden hour and blue hour times for photography in any Indian city.

Find the moon's phase, illumination and age for any date, and the next full and new moon.

Convert pressure, energy, power and frequency between common units — pascal, PSI, joule, calorie, watt, horsepower, hertz, RPM and more.

Convert between pixels, rem and em for CSS, with a customisable root font size and common size presets.

Convert internet speed and data transfer rate between bits and bytes per second — Mbps, MB/s, Gbps and more.

Find how long a file takes to download from its size and your internet speed.

Estimate how much mobile data you use per day and month for video, music, social media and calls.

Compare a mobile plan's price per GB and check whether its daily data covers your usage.

Calculate a screen's pixel density (PPI) from its resolution and diagonal size.

Find a screen's width and height in inches and centimetres from its diagonal size and aspect ratio.

Find the aspect ratio of an image or video, and the matching height when you resize to a new width.

Write any number in English words using the Indian (lakh, crore) or international (million, billion) system.

Turn English number words like ‘two crore ten lakh’ back into digits.

Convert numbers to Roman numerals and Roman numerals back to numbers, from 1 to 3,999.

Convert numbers between binary, octal, decimal, hexadecimal and any base from 2 to 36.

Convert binary numbers to decimal and see the octal and hexadecimal values too.

Convert decimal numbers to binary, with octal and hexadecimal shown alongside.

Convert hexadecimal numbers to decimal, binary and octal.

Convert decimal numbers to hexadecimal, binary and octal.

Convert octal numbers to decimal, binary and hexadecimal, and the other way round.

Convert any text to binary (UTF-8 bytes), including Hindi, accented letters and emoji.

Convert binary code back into readable text.

Convert text to ASCII codes (decimal, hex, binary or octal) and codes back to text.

Look up the code point, UTF-8 and UTF-16 bytes, HTML entity and JavaScript escape of any character.

Find the Unicode code points, UTF-8 and HTML codes of any emoji.

Turn Unicode code points like U+1F600 into the actual emoji or character.

Search HTML entities by name or character, with decimal and hex codes — ©, €,   and more.

A searchable ASCII table with decimal, hex, octal and binary values for all 128 characters.

Press any key to see its key, code, keyCode and location values for JavaScript event handlers.

Create a QR code that opens a pre-filled WhatsApp chat, email, SMS, phone call, Google Maps address or exact coordinates the moment it's scanned.

Create a scannable QR code that saves your name, phone, email and website straight into someone's contacts — no typing needed.

Scan a QR code using your camera or an uploaded image, right in your browser.

Create a QR code that adds an event straight to a calendar app, with title, location, date and time.

Generate a scannable EAN-13 barcode from a 10 or 13-digit ISBN, ready for a book cover.

Encode text or a file to Base64, or decode a Base64 string back to text — all in your browser.

Decode a JWT's header and payload locally, without sending your token anywhere.

Generate one or many cryptographically random UUIDs (v4) in bulk, with optional uppercase and no hyphens.

Calculate the network address, broadcast address, usable host range and subnet mask from an IP and CIDR prefix.

Look up the postal PIN code for an Indian address.

Convert a JSON array of objects into a CSV file, ready to open in a spreadsheet.

Convert JSON into well-formed XML.

Convert between JSON and YAML in either direction.

Generate a TypeScript interface from a JSON sample, with a custom interface name.

Generate a JSON Schema from a JSON sample.

Format, validate and minify XML, with a collapsible tree viewer showing every element and attribute.

Format or minify an HTML document.

Format and beautify minified CSS.

Format and beautify minified JavaScript.

Compress CSS by stripping comments and extra whitespace, and see exactly how much smaller it gets.

Compress JavaScript by stripping comments and extra whitespace, and see exactly how much smaller it gets.

Encode or decode HTML entities.

Encode or decode Unicode escape sequences.

Generate a random string with custom length and character set.

Generate a secure random API token.

Test a regular expression against sample text with matches highlighted.

Build a cron expression, or see what an existing one means in plain English.

Look up what any HTTP status code means.

Break a User-Agent string into browser, OS and device.

Build an HTTP request and generate the matching cURL command.

Format or minify a SQL query.

Convert Markdown to HTML with a live preview, or convert HTML back to Markdown.

Convert between CSV and JSON in either direction.

View, clean and format a CSV file as a table.

Compare two CSV files row by row and see what changed.

Build a Markdown or HTML table from simple input.

Generate realistic fake names, emails and addresses for testing.

Generate a favicon from an image, or check an existing site's favicon.

Look up a domain's DNS records.

Check whether a domain name is available to register.

Look up the location and details behind an IP address.

Look up the registration details of a domain.

Check a site's SSL certificate and expiry date.

Check how quickly a website responds.

Shorten a long URL, or expand a shortened one to see where it leads.

Break any URL down into its protocol, host, path and query parameters.

Check a page's title, description and Open Graph preview.

Pull the colour palette used on any website from a screenshot.

Pick what you want to do — undo a commit, stash, rename a branch, force push safely — and get the exact Git command with an explanation.

Choose the reset you need — soft, mixed, hard, to a commit, or back to the remote — and get the command and what it will do.

Get the right git rebase command for common tasks: onto main, interactive, continue, abort, --onto and autosquash.

Get the exact Git commands to merge, squash merge, abort a merge or resolve conflicts with ours or theirs.

Create a .gitignore for your language or framework, with macOS, Windows, Linux and editor files already covered.

Turn a ticket ID and a plain description into a clean branch name like feature/PROJ-123-add-login-page.

Build a Conventional Commits message — type, scope, description, body and breaking-change note — and the git commit command.

Break a Git URL into host, owner and repository and convert between HTTPS and SSH forms.

Build a git clone command with branch, shallow depth, single-branch and submodule options.

Split any github.com URL into owner, repo, branch and path, and get the clone, API, raw and ZIP links.

Create a clean README.md with features, install steps, usage, license and author from a short form.

Create a profile README with your intro, skills badges, stats card and links — ready to paste into your username repository.

Make shields.io badges for stars, forks, issues, license, last commit, workflow status and npm version.

Create a bug report, feature request or question template — as a YAML issue form or Markdown — for your repository.

Generate a GitHub Actions workflow for Node, Python, Java, Go, Rust, .NET, PHP, Docker or GitHub Pages.

Build a schedule trigger for GitHub Actions, converting your local time to UTC for you.

Check a workflow file for YAML errors and missing on, jobs, runs-on and steps before you commit it.

Create a production-ready Dockerfile for Node, Python, Go, Java, PHP, .NET or a static site, including multi-stage builds.

Generate a .dockerignore for your stack so images stay small and secrets stay out.

Generate a docker-compose.yml with your app, a database (PostgreSQL, MySQL or MongoDB) and Redis.

Build a docker run command with ports, environment variables, volumes, restart policy and network.

Check a docker-compose.yml for YAML errors, missing images, bad ports and undefined dependencies.

Create a Deployment, Service and optional Ingress YAML for your container with replicas, ports and resource limits.

Generate YAML for a ConfigMap, Secret, Namespace, PVC, CronJob, HorizontalPodAutoscaler or Ingress.

Generate an Nginx server block for a static site, single-page app, reverse proxy or PHP, with HTTPS and gzip.

Generate an Apache virtual host, reverse proxy block, or .htaccess rules for HTTPS, SPA routing and www redirects.

Create an ecosystem.config.js for PM2 with cluster mode, environment variables and memory restart.

Create a systemd unit file for your app with working directory, user, restart policy and environment.

Pick read, write and execute for owner, group and others to get the octal chmod number and symbolic form — or decode one.

Convert Linux file permissions between octal numbers like 644 and symbolic form like rw-r--r--.

Build a chown command to change a file's owner and group, with recursive and symlink options.

Build an ssh command with port, key, jump host and port forwarding, plus the matching ~/.ssh/config entry.

Build an scp command to upload or download files and folders over SSH.

Build an rsync command with delete, dry-run, excludes and a custom SSH port.

Turn KEY=value lines into a clean .env, a safe .env.example, JSON, Docker flags, Compose environment and shell exports.

Clean up a messy .env file: trim spaces, upper-case names, remove duplicates, sort and quote values properly.

Generate a build-and-test pipeline for GitHub Actions, GitLab CI or Bitbucket Pipelines for Node, Python, Go or Java.

Paste a cURL command and get the equivalent JavaScript fetch code, with headers and JSON body converted.

Convert a cURL command into Axios request code with headers and data already filled in.

Turn a cURL command into Python requests code, with JSON bodies written as Python dictionaries.

Convert a cURL command into Node.js code using the built-in fetch API.

Convert a cURL command into PHP code using the cURL extension.

Convert every request in a Postman collection (v2.1 JSON) into cURL commands you can run in a terminal.

Paste a JSON body, choose the method and URL, and get ready-to-run request code in cURL, fetch, Axios, Python or PHP.

Build an HTTP request with method, URL, headers, body and authentication, then copy it as cURL, fetch, Axios, Python or PHP.

Test JSON data against a JSON Schema and see every problem with its path.

Generate realistic mock JSON from a JSON Schema, respecting types, enums, ranges and formats.

Generate fake users with Indian names, usernames, emails, phone numbers, cities and signup dates.

Define your fields and generate rows of fake data as JSON, CSV, JSON Lines or SQL INSERT statements.

Generate fake Indian addresses with street, area, city, state and a pincode that fits the state's region.

Generate fake company names with industry, website, email, phone, city and size, for demos and testing.

Generate fake email addresses on reserved example domains, safe for testing forms and databases.

Generate random Indian mobile numbers in several formats for testing forms and databases.

Search the npm registry for packages and see their version, description and install command.

Check the latest version of any npm package, test a version range against all published versions and see install commands.

Check whether versions follow semantic versioning and see their major, minor, patch, pre-release and build parts.

Compare two versions, sort a list, and test whether a version satisfies a range like ^1.2.0 or ~2.3.

Format package.json with the standard key order, sorted dependencies and your choice of indentation.

Fill in a short form and get a ready-to-use package.json with scripts, dependencies and license.

Compare the dependencies of two package.json files and see what was added, removed, upgraded or downgraded.

Work out the next version number — patch, minor, major or pre-release — plus the matching npm and git tag commands.

Write a Keep a Changelog entry from lists of added, changed, fixed and removed items, with compare links.

Create a LICENSE file for MIT, ISC, BSD or Unlicense with your name and year, or a file header for Apache 2.0 and GPL 3.0.

Generate a .npmignore for a library, React component package or CLI so only the files you need get published.

Clean up a Python requirements.txt: normalise names, remove spaces, merge duplicates and sort alphabetically.

Create a composer.json for a PHP package with autoloading, requirements and license.

Read an OpenAPI or Swagger file as a simple summary: title, version, servers and a list of every endpoint.

Format an OpenAPI or Swagger document as clean, indented YAML or JSON, with optional alphabetical key sorting.

Check an OpenAPI or Swagger file for missing fields, duplicate operationIds, undeclared path parameters and broken $ref links.

Generate TypeScript interfaces and types from the schemas in an OpenAPI or Swagger document.

Convert an OpenAPI or Swagger file into a Postman collection grouped by tag, with a baseUrl variable.

Turn an OpenAPI or Swagger file into readable Markdown documentation with parameters, request bodies and responses.

Write Markdown and see the formatted result side by side, then copy or download it as Markdown or HTML.

Paste Markdown and instantly see how it will look, with no sign-up and nothing uploaded.

Convert HTML into clean Markdown — headings, links, images, nested lists, tables and code blocks.

Strip HTML tags and get clean plain text, keeping paragraphs, lists and table rows readable.

Convert Markdown into a clean PDF with headings, lists, tables, quotes and code blocks.

Turn CSV, TSV or pipe-separated data into a neat Markdown table with your choice of alignment.

Tidy an untidy Markdown table so every column lines up, keeping its alignment markers.

Create a table of contents for a Markdown document, with GitHub-style anchor links and your choice of heading levels.

Shrink SQL by removing comments and extra whitespace while keeping quoted text exactly as written.

Check SQL for unclosed quotes, unbalanced brackets, trailing commas and clauses in the wrong order.

Convert SQL INSERT statements into a JSON array of objects, handling quotes, NULLs and multiple rows.

Turn a JSON array into CREATE TABLE and INSERT statements for MySQL, PostgreSQL, SQLite or SQL Server.

Turn a CSV file into CREATE TABLE and INSERT statements, with column types guessed and quoting handled.

Extract the rows of SQL INSERT statements into CSV you can open in Excel or Google Sheets.

Write a safe INSERT statement from column = value lines, with quoting and escaping handled for your database.

Build an UPDATE statement from SET and WHERE lines, with a warning if you forget the WHERE.

Describe your columns in plain words and get a CREATE TABLE statement for MySQL, PostgreSQL, SQLite or SQL Server.

Write your tables in a simple outline and get SQL with foreign keys plus a Mermaid ER diagram.

Generate valid MongoDB ObjectIds, or paste one to read the timestamp hidden inside it.

Format messy MySQL queries into readable, indented SQL with your choice of keyword case.

Search 70+ common Redis commands with syntax and a plain-language description, grouped by data type.

Write Mermaid code and see the diagram instantly — flowcharts, sequence, class, state, ER, Gantt, pie and mind maps — then download SVG or PNG.

Convert Mermaid diagram code into a clean SVG image you can scale to any size.

Convert Mermaid diagram code into a high-resolution PNG image with a white background.

Describe your steps as simple chains with arrows and get Mermaid flowchart code, with decisions drawn as diamonds.

Write who sends what to whom, one message per line, and get Mermaid sequence diagram code.

Outline your tables and relationships and get Mermaid entity-relationship diagram code.

Paste a JSON sample and get a Mermaid ER diagram showing its entities, fields and one-to-many links.

Outline your classes, members and inheritance and get Mermaid UML class diagram code.

List your components in groups and connections between them to get a Mermaid system architecture diagram.

Describe devices, groups and links to get a Mermaid network diagram of your office or server setup.

Type an indented outline and get a Mermaid mind map you can render and download.

Type your team as an indented list and get a Mermaid organisation chart.

Paste a list of URLs and see your site's structure as a Mermaid mind map, flowchart or text tree.

Explore JSON as a collapsible tree — expand, collapse, search by structure — with validation and the line of any error.

Look up any public GitHub repository's stars, forks, issues, license, languages, latest release and last push.

Find the IPv4 addresses a domain name points to.

Find the IPv6 addresses a domain name points to.

See which mail servers receive email for a domain, in priority order.

Read a domain's TXT records, including SPF, DKIM and verification entries.

Find where a domain's CNAME alias points to.

Find a domain's authoritative name servers.

Find the hostname (PTR record) behind an IPv4 or IPv6 address.

Check whether a DNS change has spread, by asking six public resolvers (Google, Cloudflare, Quad9, OpenDNS, Verisign, AdGuard).

Work out the network, netmask, broadcast, usable host range and host count for any IPv4 CIDR block, and split it into smaller subnets.

Look up an IPv4 address's type (private, public, loopback), class, decimal, hex and binary forms, and reverse DNS name.

Expand, compress and analyse an IPv6 address: type, network range for a prefix, address count and reverse DNS name.

Convert between a CIDR prefix like /24 and a subnet mask like 255.255.255.0, with wildcard mask, binary and host counts.

Turn a start and end IP address into the smallest list of CIDR blocks that covers it exactly.

Search common TCP and UDP port numbers and the services that use them — 22 SSH, 443 HTTPS, 5432 PostgreSQL and more.

Paste a response's headers and get a security review: HSTS, CSP, cookies, clickjacking, CORS and information leaks.

Check when a website's SSL certificate expires and who issued it, so it never lapses unnoticed.

Convert a colour between HEX, RGB and HSL, all kept in sync with each other and a live colour picker.

Convert a colour with transparency between 8-digit CSS HEX, Android's #AARRGGBB format and RGBA, with a live checkerboard preview.

Generate a tint-to-shade ramp from any colour, see its nearest colour name, and preview it applied to a mobile app mock-up.

Preview a primary, secondary, accent and hover colour applied to a mobile or desktop app mock-up, then export as JSON, CSS or PNG.

Check whether a text and background colour pair meets WCAG AA or AAA contrast, for normal and large text.

Convert a colour between HEX, HSL and CMYK.

Generate a random colour, or a random palette.

Pick a base colour and get complementary, analogous, triadic, split-complementary, square and monochromatic palette suggestions.

Build a linear or radial CSS gradient visually, with a live preview and one-click copy of the CSS.

Build a CSS box-shadow visually with sliders for offset, blur, spread, colour and opacity, then copy the CSS.

Build a shadow visually and copy it as a ready-to-use Flutter BoxShadow widget.

Build a shadow visually and copy it as ready-to-use React Native shadow and elevation style props.

Build a CSS border-radius visually, including per-corner values.

Build a glassmorphism or neumorphism CSS effect visually.

Generate an XML sitemap from a list of URLs.

Turn any title or piece of text into a clean, URL-friendly slug, with a choice of hyphen or underscore separator.

Check how often keywords appear in a piece of text.

Generate a canonical link tag for a page.

Check a URL's redirect chain and final HTTP status.

Generate FAQ, Article, Product, Breadcrumb or Organization schema markup.

Check a file's true type, size and metadata.

Create a signed JSON Web Token (HS256, HS384 or HS512) from your own payload and secret, with optional issued-at and expiry.

Paste a JWT to see when it was issued, when it expires and how much time is left — without sending it anywhere.

Build an OAuth 2.0 authorization URL with client ID, redirect, scopes, a random state and optional PKCE challenge.

Create the HTTP Basic Authorization header from a username and password, plus cURL and fetch snippets.

Generate cryptographically random bearer tokens in Base64URL or hex, ready for an Authorization header.

Generate secure random API keys with a prefix like sk_live_, a chosen length and character set.

Generate strong random secrets (128 to 512 bits) in hex and Base64 for JWT signing, sessions and webhooks.

Compute an HMAC (SHA-256, SHA-384, SHA-512 or SHA-1) of a message with your secret key, in hex and Base64.

Create a bcrypt password hash with your chosen cost factor, or check a password against an existing bcrypt hash.

Create an Argon2id password hash with your chosen memory, iterations and parallelism, or verify a password against one.

Generate SHA-1, SHA-256, SHA-384 and SHA-512 hashes of any text at once.

Generate the MD5 hash of any text, for checksums and cache keys.

Generate an RSA public and private key pair (2048, 3072 or 4096 bits) as PEM files, in your browser.

Generate an Ed25519 or RSA SSH key pair with the public key line and fingerprint, in your browser.

Generate a certificate signing request (CSR) and RSA private key for an SSL certificate, with subject alternative names.

Estimate a password's strength in bits and how long it would take to guess, with warnings for common patterns.

Generate relevant hashtags for a post or topic.

Generate a short, punchy bio for a social profile.

Generate a caption idea for an Instagram post.

Generate a YouTube title and description from a topic.

Free home loan prepayment calculator: enter a lump-sum part payment and see the interest you save and how many months earlier your loan ends.

Calculate monthly payments on a car loan.

Calculate simple interest on a principal amount.

Work out a fixed loan payment amount.

Estimate how much you'll have saved by retirement from regular contributions.

See a full month-by-month loan repayment schedule.

Project the future value of a one-time and monthly investment.

See what an amount of money will be worth after inflation.

Calculate compound interest over any period and compounding frequency.

Convert between hourly, daily, weekly, monthly and annual salary.

Work out the interest rate on a loan from its payments.

Add or remove sales tax from a price.

Project the maturity value of a monthly SIP investment.

Calculate maturity value and interest on a fixed deposit.

Calculate maturity value on a recurring deposit.

Calculate the compound annual growth rate between two values.

Calculate return on investment as a percentage.

Estimate in-hand salary after standard Indian deductions.

Calculate HRA tax exemption based on salary, rent and city.

Project EPF balance at retirement from salary and years of service.

Calculate gratuity payable based on salary and years of service.

Calculate state professional tax on salary.

Calculate TDS deduction on rent, professional fees, contractor or commission payments.

Look up a bank branch's name, address and MICR code from its IFSC code.

Work out the maturity value of your Public Provident Fund for any yearly deposit, rate and number of years, with total interest earned.

Estimate your National Pension System corpus, lump sum and monthly pension from a monthly contribution, expected return and retirement age.

See the monthly EMI, interest, GST and total cost of converting a credit card purchase into EMI before you tap the button.

Calculate overtime pay from your monthly salary, working hours and the overtime multiplier, and see your total earnings.

Convert any pay — per hour, day, week, month or year — into all the others so you can compare jobs and freelance rates.

Find your per-day salary and the deduction for unpaid leave days using the divisor your employer follows.

See how much advance tax to pay and by which dates — 15 June, 15 September, 15 December and 15 March — for your estimated tax.

Estimate the tax on profit from selling listed shares or equity mutual funds, with short-term and long-term rates and cess.

Calculate the monthly EMI, interest and total cost of a two-wheeler loan from the price, down payment, rate and tenure.

Compare paying in full today with buying on EMI and see exactly how much extra the EMI option costs you.

Build a UPI payment link with the amount and note filled in, ready to share on WhatsApp or turn into a QR code.

Find the sale price after one or two discounts and see exactly how much you save and the real total discount.

Add a discount and GST to a marked price and see the final amount you actually pay.

Work out the real price per item and effective discount of buy one get one, buy two get one and similar offers.

Calculate the cashback you get with a cap, and the effective price and discount after it.

Check how much a percentage or flat coupon saves, honouring the minimum cart value and the maximum discount.

Compare two or three packs by price per kilogram, litre or piece and see which one is the best value.

Find the price per kilogram, per 100 grams or per litre from the pack price and weight.

Plan your shopping spend across groceries, clothes and electronics and see how much of your budget is left.

Add delivery, handling and tip to your order and see the true total, including the free-delivery threshold.

Find how many units you must sell to cover your costs, and how many to reach a target profit.

Calculate commission from a sale amount, rate and an optional fixed bonus.

Calculate commission with tiered rates, where each rate applies only to the sales inside its band.

Set a selling price from your cost using a markup or a margin, and add GST if needed.

Work out a wholesale price and the suggested retail price from your cost and the margins you and the retailer need.

Calculate net revenue from units, price, discounts and returns.

See how many months your cash will last at today's burn, and with revenue growth.

Calculate your net and gross monthly burn rate and the runway it implies.

Work out your customer acquisition cost and how long it takes to earn it back.

Estimate customer lifetime value from revenue per customer, margin and churn, and compare it with CAC.

Find your conversion rate from visitors and conversions, plus cost per conversion.

Calculate churn and retention rates for a period, and the annual churn a monthly rate implies.

Calculate monthly recurring revenue, net new MRR and ARR from new, expansion, contraction and churned revenue.

Convert MRR into annual recurring revenue and project it forward with monthly growth.

Calculate gross profit and gross margin from revenue and cost of goods sold.

Calculate net profit and net margin after all costs, expenses and tax.

Calculate return on ad spend, ACOS and the break-even ROAS for your margin.

Project monthly revenue forward with a steady growth rate and see the total.

Estimate the true monthly and yearly cost of an employee including PF, ESI, gratuity, bonus and overheads.

Estimate the first-year cost of a hire including recruitment fee, onboarding and training.

Find the true yearly cost of a loan once fees are included, so you can compare offers fairly.

Convert a nominal interest rate into the effective yearly yield (APY) for any compounding frequency.

See what today's money will be worth in the future after inflation.

Find how long it takes to clear a debt and how much interest you save by paying extra each month.

Calculate your debt-to-income ratio and see how a new EMI changes it.

Estimate your electricity bill from the units used, slab rates, fixed charge and duty, using the numbers on your own bill.

Estimate a water bill from the kilolitres used, rate per kilolitre, fixed charge and sewerage charge.

Work out the savings, payback time and 25-year benefit of a rooftop solar system from its size, cost and your tariff.

Find the solar system size, number of panels and roof area you need to cover your monthly electricity use.

Find how many hours your battery will run your load, and how big a battery you need for the backup you want.

Get a room's floor area, wall area, perimeter and volume in square feet and square metres.

Find how many litres of paint your room needs for a number of coats, after leaving out doors and windows.

Count the tiles and boxes you need for a floor or wall, including extra for cuts and breakage.

Calculate how many planks or boards, and boxes, you need to cover a room, with wastage included.

Calculate cement bags, sand and aggregate for a concrete slab from its size and grade (M15, M20 or M25).

Estimate the number of bricks for a wall from its length, height and thickness, minus doors and windows.

Calculate how many wallpaper rolls you need from your wall width, height and roll size, with pattern repeat.

Work out the fabric length and widths to buy for curtains from your window size, fullness and hems.

Convert cups, spoons, millilitres, grams and ounces for common Indian kitchen ingredients like flour, sugar, rice and ghee.

Convert cups to grams for flour, sugar, rice, butter and other ingredients.

Convert grams to cups, tablespoons and teaspoons for common baking and cooking ingredients.

Convert oven temperatures between Celsius, Fahrenheit and gas mark, with the fan-oven equivalent.

Scale all the ingredients of a recipe up or down for a different number of servings, keeping fractions neat.

Add up the cost of each ingredient you use and get the total cost of a recipe and the cost per serving.

Estimate how much rice, dal, sabzi, roti and sweets to cook or order for any number of guests.

Plan how many soft drinks, water, ice and — for adult guests — alcohol you need for your party's length and guest count.

Add up fuel, tolls, stay, food and other costs for a road trip and see the total and the cost per person.

Plan a holiday budget across travel, stay, food, activities and shopping, with a safety buffer and per-day cost.

Calculate the total cost of a hotel stay with nights, rooms, GST and extras.

Find your car or bike's monthly and per-km running cost including fuel, service, insurance, parking and EMI.

See how much value a car loses each year with the declining-balance method and what it may be worth after N years.

Work out the cost of an electric-vehicle charge, the energy drawn from the grid and the cost per km.

Estimate an electric vehicle's range from the battery size, energy use and driving conditions.

Compare the cost of a trip in an electric vehicle with a petrol car and see how much you save.

Work out the parking fee for any number of hours and days with a first-hour rate, extra-hour rate and daily cap.

Find the real flight time from local departure and arrival times and the time zones of both airports.

Check the connection time between two flights and whether it is enough for a safe transfer.

Find when to leave home and reach the airport for a domestic or international flight, with check-in and gate closing times.

Calculate how long a train journey takes from the departure and arrival date and time on your ticket.

Get a printable packing checklist for your trip based on the days, weather, trip type and whether it is international.

Look up the vehicle registration code of any Indian state or union territory — GJ for Gujarat, MH for Maharashtra and more.

Find the three-letter IATA code of Indian and major international airports by city or name — DEL, BOM, BLR and more.

Turn your topics, timings and owners into a clean meeting agenda you can copy or download.

Create tidy meeting minutes with attendees, discussion, decisions and action items, ready to copy or download.

Write a formal business letter — general, complaint, request, resignation or thank-you — from your own details.

List your expenses by date and category and get totals and a report you can copy or download.

Create a tax invoice PDF with CGST and SGST or IGST split, GSTINs and amount in words. Free, no sign-up.

Create a proforma invoice PDF — an advance bill before the sale — with items and GST.

Create a PDF estimate for a job or project with items, GST and a validity date.

Create a delivery challan PDF listing goods and quantities sent, without prices.

Create a credit note PDF to reduce an invoice for returns, discounts or corrections.

Create a debit note PDF to increase an invoice for extra charges or price corrections.

Create a payment receipt PDF showing what was paid, how and when, with a signature line.

Create a clickable email link with a subject and message for your website or email.

Create an sms: link that opens the messaging app with a number and message ready, for Android and iPhone.

Create a tel: link so visitors can call you with one tap, plus the HTML to paste into your site.

Create an add-to-Google-Calendar link with title, date, time, location and details.

Check whether an IMEI number has a valid format using the Luhn check, and see its parts.

Check the length and check digit of an IMEI to catch typing mistakes.

Format a phone number as E.164, international, national or plain digits, with a tel: link.

Check whether a number is a valid 10-digit Indian mobile number and clean it up.

Count SMS characters and segments, and see whether your message uses GSM-7 or Unicode encoding.

Calculate how many SMS segments your message needs and what it costs to send at scale.

Search international dialling codes for 80+ countries — +91 India, +1 USA, +44 UK and more.

Paste a phone number with its country code to see which country it belongs to.

Create every iOS and Android app icon size from one image and download them as a ZIP.

Generate all the iPhone and iPad app icon sizes, including the 1024 px App Store icon, from one image.

Generate Android launcher icons for every density plus the 512 px Play Store icon from one image.