Unit conversion trips everyone up — baking between grams and cups, shipping between kilograms and pounds, or checking a temperature from a foreign forecast. An online unit converter removes the mental math.
Everyday conversions, solved
- Length — inches to centimetres, miles to kilometres, feet to metres.
- Weight — pounds to kilograms, ounces to grams, stones to kilograms.
- Temperature — Fahrenheit, Celsius and Kelvin both directions.
- Volume — litres to gallons, millilitres to fluid ounces, cups to millilitres.
- Speed & data — mph to km/h, megabytes to gigabytes.
How to use the converter
Pick a category, type a number in either the "Value" or "Result" box, and the tool converts in both directions instantly. The formula behind the conversion is shown below the fields, so you can learn the factor while you get the answer. Use the swap button to flip the two units.
Handy conversion facts
1 inch = 2.54 cm, 1 mile ≈ 1.609 km, 1 kg ≈ 2.205 lb, and to get Celsius from Fahrenheit subtract 32 then multiply by 5/9. Keep this tool bookmarked and you will rarely need to memorise another factor.
Private by design
Conversions run locally in your browser — no values are sent anywhere. The tool works offline after first load and never asks for an account.