Unit Converter
Convert length, weight, temperature, area, volume, speed, and data between any units instantly.
How to Use the Unit Converter
Select a category, choose the units you want to convert from and to, then enter a value. The converted result appears automatically. Use the ⇄ button to swap the conversion direction.
Supported Categories
- Length: mm, cm, m, km, inch, foot, yard, mile, nautical mile
- Weight: mg, g, kg, tonne, ounce, pound, stone
- Temperature: Celsius (°C), Fahrenheit (°F), Kelvin (K)
- Area: mm², cm², m², km², hectare, acre, sq ft, sq in
- Volume: mL, L, m³, US gallon, UK gallon, fl oz, cup, pint, quart
- Speed: m/s, km/h, mph, knots
- Data: B, KB, MB, GB, TB, PB
Common Conversions
- 1 inch = 2.54 cm
- 1 pound = 0.453592 kg
- 0°C = 32°F (freezing point of water)
- 1 mile = 1.60934 km
- 1 US gallon = 3.78541 L
Frequently Asked Questions
What categories does the converter support?
Length, weight, temperature, area, volume, speed, and data storage. Each category includes the most commonly used units.
Can it convert between metric and imperial?
Yes. For example, metres to feet, kilograms to pounds, Celsius to Fahrenheit, and kilometres to miles.
Does temperature conversion work for Celsius, Fahrenheit, and Kelvin?
Yes. All three temperature scales can be converted to each other.
Can I swap the from and to units?
Yes. Click the ⇄ button between the fields to swap the source and target units instantly.
Do results update automatically?
Yes. Results update as you type — no need to press a Calculate button for the unit converter.