Unit converter
Length, weight, temperature and volume
How it works
Convert length, mass, temperature and volume using SI factors. Gallons and fluid ounces are US units. Temperature inputs must be at or above absolute zero.
Example
1 inch = 2.54 cm; 1 lb = 0.45359237 kg; 0°C = 32°F.
How to use
- Enter your values or choose a local file.
- Choose settings and run the tool.
- Review the result, then copy it or download the file.
Common questions
What rules does this tool use?
Convert length, mass, temperature and volume using SI factors. Gallons and fluid ounces are US units. Temperature inputs must be at or above absolute zero.
Are my inputs uploaded?
Calculations, texts and files are processed in this browser. The currency tool requests only currency codes from our server.
Free tool · Inputs processed locally · Updated October 5, 2026