Percentage Calculator
Calculate percentages, percent change, reverse percentages, and percentage add-ons or discounts.
Share
The inputted text is too long to include in a share link.
Unit Converter
Convert length, mass, volume, temperature, time, digital storage, and other units.
How to use this unit converter
Use this converter when you know a measurement and need the equivalent value in another compatible unit.
- Choose the measurement type, such as length, mass, volume, temperature, or speed.
- Choose the source and target units from the compatible options.
- Enter a value on either side to update the other value immediately.
- Use the reverse button when you want to switch the two units and values.
Unit Converter features
- Convert between compatible units for common measurement types.
- Choose the measurement category before selecting units.
- Enter a value on either side of the conversion.
- Select source and target units from compatible options.
- Reverse the units and values with one click.
- Convert length, mass, volume, temperature, speed, and other supported units.
Unit types supported
This unit converter supports everyday conversions for length, area, mass, volume, temperature, time, speed, pressure, power, energy, digital storage, angles, frequency, force, torque, voltage, current, charge, flow rates, pace, and more.
Choose a measurement type first, then pick compatible units from that group. Results update automatically as you change either value or either unit.
This is most helpful when you are translating a measurement for a recipe, project plan, travel note, specification, classroom problem, spreadsheet, or support message. Keeping the measurement group explicit helps avoid mistakes like treating fluid ounces and weight ounces as interchangeable or comparing digital storage units that use different bases.
How this unit converter works
The converter uses unit definitions loaded in the browser. Most units use a multiplicative conversion factor within the same measurement group. Temperature conversions use offset formulas because Fahrenheit, Celsius, and Kelvin do not share the same zero point.
For factor-based units, the value you edit is converted through the definition used by the measurement library and then expressed in the other unit.
Rounding is applied for readability. That makes the output easier to paste into notes, estimates, and everyday calculations, but regulated engineering, laboratory, or medical work may require a specific precision rule that should be checked separately.
Unit converter FAQ
Why can I only choose certain target units?
The converter only shows units from the same measurement group, so length converts to length, mass to mass, temperature to temperature, and so on.
Why are temperature conversions different?
Temperature scales use different zero points, so temperature conversions require both multiplication and an offset.
How precise are the results?
Results are formatted for practical readability. For scientific or regulated work, confirm required precision and rounding rules separately.
Why are some units named differently than I expect?
Unit names come from the underlying definitions and may use technical labels or abbreviations. Use the measurement group and abbreviation together to confirm the unit you selected.
Built and maintained by utilkit. Found an issue? Send corrections to contact@utilkit.com