Unit Converter
Quick conversions for the everyday length, mass, temperature and volume units.
Runs entirely in your browser. Nothing you type is uploaded.
About this tool
A deliberately small converter for the units people look up most: metres and feet, kilograms and pounds, Celsius and Fahrenheit, litres and gallons. Pick a quantity, type a value, and every unit in that family updates at once.
Questions & answers
- Which units are included?
- Length, mass, temperature and volume, with the metric and US customary units in daily use. For scientific and specialised units, use OmniConvert.
- How exact are the conversions?
- They use the exact legal definitions — one inch is exactly 25.4 mm and one pound is exactly 0.45359237 kg — and results are rounded for display only.
- Does this tool send my data to a server?
- Runs entirely in your browser. Nothing you type is uploaded.
Related tools
Need the full version? OmniConvert goes much deeper on this topic.