Universal Unit Converter
Convert length, area, volume, weight, temperature, time, speed, angle, pressure, energy, power, data and more across 16 categories — instantly and for free.
All conversions
Click any value to copy it.About Universal Unit Converter
The Universal Unit Converter converts measurements across 16 categories: length, area, volume, weight and mass, temperature, time, speed, angle, pressure, energy, power, digital storage, frequency, electric current, electric charge and voltage. Type a value once and the result appears instantly, along with the formula used.
Most conversions multiply your value by a fixed factor — for example, 1 mile equals 1.609344 kilometers. Temperature is the exception: Celsius, Fahrenheit, Kelvin and Rankine use offset formulas such as °F = °C × 9/5 + 32, which the tool applies automatically.
It is the quick answer when a recipe lists US cups, a spec sheet uses PSI, or a file size is quoted in gibibytes. An “All conversions” table shows your value in every unit of the category at once — click any figure to copy it. Free and entirely in your browser.
How to use Universal Unit Converter
- Pick a conversion type from the 16 categories, or use the search box to find a category or unit by name.
- Choose the “From” unit and the “To” unit from the dropdowns.
- Enter your value — the result and the conversion formula update as you type.
- Click the swap button to reverse the direction of the conversion.
- Scroll to the “All conversions” table to see your value in every unit of the category and click any value to copy it.