Unit Conversion

Convert length, mass, time, volume, speed and temperature units with the conversion factors written out. Try “convert 72 km/h to m/s” and see the unit cancelling.

Try an example:

What you can do with the Unit Conversion

Length, mass, time, volume and temperature conversions.

Enter your values or describe the problem in the calculator above. Review the result and the explanation before using it in homework, study or practical calculations.

Example input

e.g. convert 72 km/h to m/s

How the Unit Conversion works

  1. Write the starting value with its unit (72 km/h).
  2. Multiply by conversion fractions so unwanted units cancel (× 1000 m/1 km × 1 h/3600 s).
  3. Multiply out and state the answer with the new unit (20 m/s).

Frequently asked questions

How do I convert km/h to m/s?

Divide by 3.6. For example 72 km/h ÷ 3.6 = 20 m/s.

How do I convert Celsius to Fahrenheit?

Multiply by 9/5 and add 32: °F = °C × 9/5 + 32.

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