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Fahrenheit to Celsius Converter

Convert fahrenheit to celsius instantly and accurately. 1 °F = -17.2222 °C. Type any value below — the result updates as you type.

How to use this tool

  1. 1Enter the value in fahrenheit.
  2. 2Read the converted result in celsius instantly.
  3. 3Use the swap button to reverse the conversion, or pick any other unit.

Frequently asked questions

How do you convert fahrenheit to celsius?+

1 °F = -17.2222 °C. To convert, multiply the number of fahrenheit by the conversion factor between °F and °C. This calculator does it automatically as you type.

Is this fahrenheit to celsius converter accurate?+

Yes. It uses exact SI/standard conversion factors, so results match official temperature definitions to full precision.

Is it free and private?+

Completely free with no sign-up. All conversion happens in your browser — nothing is uploaded to a server.

Learn more

  • Fahrenheit vs Celsius: what's the difference?
  • Fahrenheit to Celsius conversion table
  • How many celsius are in a fahrenheit?