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Unit converter

Miles to kilometres, pounds to kilograms, Fahrenheit to Celsius and more.

Private by design: this tool runs in your browser. Nothing you add is uploaded.

How to use it

  1. Choose what you are measuring: length, weight, temperature, volume, speed or area.
  2. Type the value.
  3. Pick the units to convert from and to.
  4. Read the answer.
Screenshot of the Unit converter tool on Sureno, in use
Unit converter in use: a real screenshot of this page.

Questions and answers

How do I convert Fahrenheit to Celsius in my head?

Subtract 30 and halve it for a rough answer. The exact formula is (F − 32) × 5/9.

How many kilograms in a pound?

One pound is about 0.454 kilograms; one kilogram is about 2.2 pounds.

How many cups in a litre?

About 4.2 US cups, or 4 metric cups of 250 ml.

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