Unit converter

Convert measurements of the same quantity to compare values expressed in different units.

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How to use

  1. Choose the measurement: Length, Mass, or Temperature. This selection determines the available units.
  2. Enter the value and select its original unit in From and the desired unit in To.
  3. Click Convert. Read the result and check the units in the conversion detail; choose the units again after changing the measurement.

How it works

Units for different quantities are not interchangeable: converting volume to mass, for example, requires the substance's density.

An example

2.5 kilometers equal 2,500 meters; 20 °C equal 68 °F.

Common questions

Why does temperature conversion use a different formula?

The scales have different intervals and starting points. To convert Celsius to Fahrenheit, multiply by 1.8 and add 32.

Can I convert liters directly to kilograms?

There is no universal conversion factor. Liters measure volume, kilograms measure mass, and the relationship depends on density.