Unit Converter
Convert between common length, weight, and temperature units instantly as you type.
Runs entirely in your browser, nothing is uploadedConvert a unit in three steps
- Pick a category, length, weight, or temperature.
- Choose the unit you're converting from and enter a value.
- Choose the unit you're converting to, the result updates instantly.
Why people use the Unit Converter
Everything worth knowing before you dive in.
How it helps
Switching between metric and imperial units comes up constantly, following a recipe in the wrong measurement system, converting a shipping weight, or checking a temperature forecast from another country. This tool covers the three categories that come up most often: length, weight, and temperature, with the common units for each.
Built for real use
Length covers everything from millimeters to miles, weight spans grams to pounds, and temperature handles Celsius, Fahrenheit, and Kelvin with the correct formula for each, not just a simple ratio, since temperature scales don't share a common zero point the way length and weight units do.
Private by default
Conversion happens instantly as you type, with a swap button to flip the direction in one click when you realize you picked the wrong starting unit.
Pro tip
For cooking conversions in particular, small rounding differences between systems are normal and rarely affect a recipe's outcome, so treat the converted figure as a close guide rather than an exact requirement.
Common questions
Why is temperature conversion different from length or weight?
Celsius, Fahrenheit, and Kelvin all use different zero points, so converting between them needs a formula rather than a simple multiplication.
How precise are the conversions?
Results are calculated to several decimal places and rounded for readability, accurate enough for everyday cooking, shipping, or travel use.
Can I convert between length and weight?
No, only units within the same category, length, weight, or temperature, can be converted against each other.