Calculator categories

Everyday

Tips, bill split, fuel cost, hourly rate. 3 free calculators with the formula, worked examples, and FAQ on every page. All math runs in your browser — nothing is sent to a server.

Tip calculator

Split a bill across people with a chosen tip percentage

Fuel cost calculator

Trip fuel and price total in metric (L/100 km) or US (mpg), with per-person split

Electricity cost calculator

kWh and dollars per day / month / year for any appliance