Unit Converter
Convert values between common units across four categories: length (km, m, mi, ft, in, …), weight (kg, lb, oz, …), temperature (°C, °F, K), and volume (L, mL, gal, cup, …). Type in any field to update all others instantly. Runs in your browser.
Convert between supported length, weight, temperature, and volume units. Enter a value in any row and the other rows in the same category update automatically.
How to convert units
- Select Length, Weight, Temperature, or Volume.
- Enter a number beside the unit you already know.
- Read or copy the converted values from the other unit rows.
Supported units and conversion behavior
Length includes metric and common imperial units, weight includes tonne through ounce, temperature supports Celsius, Fahrenheit, and Kelvin, and volume includes liters plus common US volume units.
Length, weight, and volume use fixed factors to a base unit. Temperature uses dedicated Celsius, Fahrenheit, and Kelvin formulas.
Privacy and limitations
All unit conversion calculations are performed locally in the browser. Values entered into the converter are not intentionally sent to a server by this tool.
Frequently asked questions
Does it support miles and feet?
Yes.
Does it support pounds and ounces?
Yes.
Which gallon does it use?
The volume category uses US gallons and related US units.
Can it convert Celsius to Fahrenheit?
Yes.
Why are very large or tiny results shown in scientific notation?
The formatter switches to exponential notation outside its normal display range.