Unit Converter

A unit converter is a tool that translates a quantity expressed in one unit to its equivalent in another unit within the same measurement category. For example, converting 5 miles to kilometers or 100°F to Celsius.

Unit conversion is essential in science, engineering, cooking, travel, and everyday life. This tool supports 11 categories with over 80 units and uses standard conversion factors defined by international agreements (SI, NIST).

Conversions are performed by multiplying by a conversion factor relative to a base unit. Temperature is the exception — it requires both scaling and offset adjustments (e.g., °C to °F uses the formula F = C × 9/5 + 32).

1. Select a category — Choose from 11 categories: Length, Mass, Volume, Temperature, Data Size, Speed, Time, Area, Pressure, Energy, or Frequency.
2. Enter a value — Type the number in the "From" input field. The conversion updates in real-time as you type.
3. Choose units — Select the source unit and target unit from the dropdowns. Use the Swap button to reverse them.
4. View the conversion table — The full table below shows the entered value converted to every unit in the selected category.