How to use the Unit Converter
The unit converter changes values between units of length, weight, temperature, volume, area, speed, time and data and shows the value in every unit at once.
The formula
Each unit is stored as a multiple of a base unit. The converter multiplies by the "from" factor and divides by the "to" factor.
Worked example
5 miles = 8.047 kilometres. 1 kilogram = 2.205 pounds.
Tips for better results
- Use the swap button to reverse a conversion.
- Pick a category first, then your units.
Common mistakes to avoid
- Mixing US and UK gallons.
- Mixing 1,000 and 1,024 for data units.
Please note: Results are estimates for general use. For safety-critical work such as electrical or building projects, check with a qualified professional and local codes. See our Disclaimer.