Home & Household

Find the units and rupees any appliance costs you per day, month and year from its wattage and hours of use.

Estimate the monthly electricity bill of your air conditioner from its power, daily hours and your tariff.

Calculate how much a fridge adds to your monthly electricity bill from its wattage and how often the compressor runs.

Estimate the electricity cost of your washing machine per month and year from its power and hours of use.

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.