Small jobs that come up constantly: splitting a restaurant bill, converting kilograms to pounds, counting the words in an essay, generating a password you don't have to invent. None of them needs an account, and nothing you type is sent to a server. Calculations and text stay in your browser.
The conversion tools use exact definitions rather than rounded approximations: an inch is exactly 2.54 centimetres, and a pound is exactly 0.45359237 kilograms. Where a conversion is ambiguous, such as US versus imperial gallons, the page says which it uses.
Conversions & Basics
Everyday arithmetic calculator
Unit ConverterLength, weight, temp & more
Kg to Pounds ConverterKilograms to lbs with stones output
CM to Feet and Inches ConverterCentimeters to feet and inches
Everyday Utilities
Split bills easily
Word CounterCount words & characters
Password GeneratorSecure random passwords
Specialist Estimators
Rough monthly AWS cost estimate
Parlay CalculatorCombined odds and payout for a parlay
Exact conversion factors
| Unit | Equals |
|---|---|
| 1 inch | 2.54 cm (exact) |
| 1 foot | 0.3048 m (exact) |
| 1 mile | 1.609344 km (exact) |
| 1 pound | 0.45359237 kg (exact) |
| 1 US gallon | 3.785411784 litres (exact) |
| 1 imperial gallon | 4.54609 litres (exact) |
The two gallons differ by about 20%, which is why fuel economy quoted in miles per gallon looks better for the same car when the figure is in imperial gallons.
The parlay calculator is a probability and payout tool. It explains how combined odds work and is not betting advice. Gambling carries a real risk of loss, and if it is causing problems, free confidential support is available through your local problem-gambling helpline.