Everyday calculators
Fuel, electricity, paint, flooring and more
- BTU Calculator Air conditioner size for a room
- Concrete Calculator Concrete volume and bags for a pour
- Dog Age Calculator Dog years to human years by size
- Electricity Cost Calculator Running cost per day, month and year
- EV vs. Petrol/Diesel Cost Calculator Yearly running cost and EV payback
- Final Grade Calculator Score needed on the final exam
- Fuel Cost Calculator Fuel cost for any trip
- GPA Calculator Grade point average on the 4.0 scale
- Paint Calculator Litres of paint a room needs
- Solar Panel & Battery Payback Calculator Years until panels and a battery pay back
- Square Footage Calculator Floor area from feet-and-inches measurements
- Tile Calculator How many tiles you need
- UPS & Battery Backup Runtime Calculator How long a UPS or battery bank runs a load
- Wind Chill Calculator Feels-like temperature from wind and cold
Which everyday calculator to use
For home projects, start with the square footage calculator to get a floor area from feet-and-inches measurements. Then use the paint calculator for walls, the tile calculator for a floor, or the concrete calculator for a slab, footing or column. The BTU calculator sizes an air conditioner for a room.
For running costs, the electricity cost calculator prices an appliance per day, month and year, the fuel cost calculator prices a trip, and the EV vs. petrol/diesel cost calculator compares a year of driving and the payback on an electric car. The solar panel and battery payback calculator estimates how many years a system takes to pay for itself, and the UPS runtime calculator estimates how long a battery backup keeps a load running.
For school, the GPA calculator works out a grade point average on the 4.0 scale and the final grade calculator finds the score you need on a final exam. The dog age calculator converts dog years to human years by size, and the wind chill calculator gives the feels-like temperature from the air temperature and wind speed.