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Unit Converter (Length, Weight, Temperature & More)

Choose a quantity, enter a value and the conversion appears instantly.

Your text and files never leave your browser — nothing is sent to a server.

-Open the full Length Converter
Show all units
  • Nanometer (nm)-
  • Micrometer (µm)-
  • Millimeter (mm)-
  • Centimeter (cm)-
  • Meter (m)-
  • Kilometer (km)-
  • Inch (in)-
  • Foot (ft)-
  • Yard (yd)-
  • Mile (mi)-
  • Nautical mile (NM)-
  • Shaku (East Asian foot) (尺)-
  • Ri (East Asian league) (里)-
  • Light-year (ly)-
All unit converters

How to use

  1. Choose what you want to convert — length, weight, temperature and so on — under “Quantity”.
  2. Type a number in “Value” and pick the units to convert from and to. The arrow button swaps the two units.
  3. “Show all units” lists the same value in every unit of that quantity at once.
  4. For background and FAQs, open the dedicated page with the link under the result. The page address keeps the quantity, value and units, so you can share it as is.

FAQ

Which quantities can I convert?

Length, weight, area, volume, temperature, speed, pressure, energy, power, data size, angle, time, fuel economy, flow rate, force, radiation dose, electric charge, luminous intensity, magnetomotive force, food energy and dry volume.

What definitions do the conversions use?

Units with an internationally agreed definition, such as the inch, pound and gallon, use that exact value. Traditional and historic units use widely accepted reference values, shown next to the unit name — for example kin (600 g).

Is anything I type saved or sent anywhere?

No. Everything is calculated in your browser and nothing is sent to a server. The value is kept only in the page address so you can share it.

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