Celsius to Fahrenheit

This calculator converts Celsius to Fahrenheit for weather, cooking, science, and conversations across temperature systems.

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Enter the temperature in degrees Celsius to get the corresponding Fahrenheit value. Negative numbers work too, because winter does not respect convenient inputs.

The formula is: Fahrenheit = Celsius × 9 / 5 + 32. Multiply the Celsius value by 1.8, then add 32.

Worked example

For 20°C, calculate 20 × 9 / 5 + 32 = 68°F. A room at 20°C is therefore 68°F.

Common questions

What is 0°C in Fahrenheit?

Zero degrees Celsius equals 32°F. This is the freezing point of fresh water under standard atmospheric pressure.

When are Celsius and Fahrenheit equal?

The two scales show the same number at -40 degrees. In other words, -40°C equals -40°F.

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