Date & Time

Calculate exact age in years, months and days between a date of birth and any date — handy for exam eligibility.

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.

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

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.

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

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.