How it works
Each category converts through a base unit, except temperature which uses direct formulas.
Temperature uses proper Celsius, Fahrenheit, and Kelvin formulas.
Convert common units.
Convert length, weight, temperature, and volume values live in your browser.
ResultLive
Practical examples
- Convert metric and imperial length values for travel, DIY, or product dimensions.
- Switch between weight, volume, and temperature categories.
- Swap from and to units without re-entering the value.
How to read the result
- Most categories convert through a base unit.
- Temperature uses direct Celsius, Fahrenheit, and Kelvin formulas.
- Precision control changes how many decimal places are shown.
Limits and privacy notes
- Specialized scientific units are intentionally out of scope.
- Rounding is for everyday readability.
- Conversion inputs are processed locally in your browser.
Readable vs exact
- Use two decimals for everyday results.
- Use eight decimals when small unit differences matter.
- Temperature is converted with direct formulas.
Convert within a category
- Length, weight, and volume use base-unit conversion.
- Temperature uses Celsius as the intermediate reference.
- Swap keeps the value while reversing units.
Everyday units
- Specialized scientific units are intentionally omitted.
- Rounding is for display.
- Copy result when moving it into a note or message.