Online Unit Converter
Free online unit converter covering 8 categories and 50+ units: length, weight, temperature, area, volume, speed, data storage and time.
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How to Use
- Pick a category
Tabs at the top cover length, weight, temperature, area, volume, speed, data storage and time — just click to switch.
- Choose units and enter a value
Select the source unit in From and the target unit in To, type a number and the result updates live. Click ⇄ to swap the units instantly.
- See every unit at once
The table below lists the same value converted into every unit of the current category for quick reference.
FAQ
How do I convert units?
Pick a category (length, weight, temperature and so on), choose the source and target units, then type a value. A full list of that value in every other unit appears below.
How many centimeters are in one inch?
Exactly 2.54 cm. One foot is 12 inches, which equals 30.48 cm.
How many grams are in one jin (catty)?
One Chinese jin equals 500 grams. One pound equals 453.59237 grams.
How do I convert Celsius and Fahrenheit?
Fahrenheit = Celsius × 9/5 + 32, and Celsius = (Fahrenheit − 32) × 5/9. Kelvin relates to Celsius by K = °C + 273.15.