Unit Converter
Convert length, weight, temperature, area, and volume between common units instantly.
Category
How to use
- 1
Choose a measurement category
Select length, weight, temperature, area, or volume depending on what you need to convert.
- 2
Pick source and target units
Choose the unit you are converting from and the unit you want the result in — for example, miles to kilometers or °F to °C.
- 3
Enter a value
Type the number to convert. The equivalent value in your target unit appears instantly.
- 4
Swap or change units anytime
Switch categories or flip units to convert in the opposite direction without re-entering your number.
Frequently Asked Questions
Length (mm, cm, m, km, in, ft, yd, mi), weight (mg, g, kg, oz, lb), temperature (°C, °F, K), area (m², ft², acres, hectares), and volume (ml, L, fl oz, cups, gallons).
Yes. Conversions use standard international factors. Temperature uses the correct offset formulas between Celsius, Fahrenheit, and Kelvin.
US customary units — US fluid ounces, US cups, and US gallons. This matches common American cooking and packaging labels.
Absolutely. Pick any category and select one metric unit and one imperial unit. The converter works in both directions.