Unit Converter
Convert length, weight, temperature and data units instantly - kilometres to miles, kilograms to pounds, Celsius to Fahrenheit and more.
Runs 100% on your device - nothing you enter or upload leaves your browser.
How to use the unit converter
Choose a measurement type, enter a value and pick the units. The answer updates as you type, along with the exact conversion factor used.
Common conversions
- 1 mile = 1.609344 kilometres
- 1 kilogram = 2.20462 pounds
- 0°C = 32°F = 273.15 K
- 1 GB = 1024 MB
Frequently asked questions
Which units are supported?
Length (mm, cm, m, km, inch, foot, yard, mile), weight (mg, g, kg, tonne, ounce, pound), temperature (Celsius, Fahrenheit, Kelvin) and data storage (bytes to terabytes, using 1024-based binary multiples).
Are the conversions exact?
Length and weight use the exact international definitions (1 inch = 25.4 mm exactly, 1 pound = 0.45359237 kg exactly). Results are rounded to a readable number of digits.
KB or KiB - which does this use?
The data converter uses the 1024-based convention (1 KB = 1024 bytes), which is how operating systems and phones report storage.
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