Unit converter
Choose a category, enter a value and the two units: the result appears right away, with the conversion to all the other units.
A unit converter for everyday life
This free converter switches between units in an instant: lengths (metres, kilometres, miles, feet, inches), weights (kilograms, pounds, ounces), volumes (litres, gallons, cups), areas (m², hectares, acres), speeds (km/h, mph, knots), temperatures (Celsius, Fahrenheit, kelvin) and digital storage (bytes, KB, MB, GB, TB).
Handy when travelling, cooking and working
To read an American recipe, understand a distance in miles, convert a luggage weight to pounds or compare file sizes, just pick the category and the two units. A table also shows the value in all the other units of the category.
Accurate results
Conversions use the official factors (for example 1 inch = 2.54 cm, 1 mile = 1.609344 km, 1 pound = 0.45359237 kg). Storage units are counted in base 10 (1 GB = 1,000 MB).
Frequently asked questions
How do I convert miles to kilometres?
1 mile equals 1.609344 km. Multiply the number of miles by 1.609344.
How do I convert Fahrenheit to Celsius?
Subtract 32, then multiply by 5 and divide by 9. For example, 68 °F = 20 °C.
How do I convert Celsius to Fahrenheit?
Multiply by 9, divide by 5, then add 32. For example, 20 °C = 68 °F.
Is 1 GB 1,000 or 1,024 MB?
Here 1 GB = 1,000 MB (decimal standard). Some systems count 1,024 MB, written GiB.
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