Fahrenheit to Celsius Converter
Convert Fahrenheit to Celsius (°F to °C) instantly, with the formula and a table of common values. Free, runs in your browser, nothing uploaded.
Everything happens on your own device. Nothing you type is ever sent anywhere.
Category
Result
-17.222222 °C
Formula
°C = (°F − 32) × 5/9
Common Fahrenheit to Celsius Conversions
| Fahrenheit | Celsius |
|---|---|
| -40 °F | -40 °C |
| -20 °F | -28.888889 °C |
| -10 °F | -23.333333 °C |
| 0 °F | -17.777778 °C |
| 20 °F | -6.666667 °C |
| 25 °F | -3.888889 °C |
| 37 °F | 2.777778 °C |
| 50 °F | 10 °C |
| 100 °F | 37.777778 °C |
This converter handles eight common unit categories - length, weight, temperature, volume, area, speed, data storage, and time - and updates the result instantly as you type, entirely in your browser. Most categories convert by a fixed ratio to a base unit (like meters for length or bytes for data), except temperature, which needs its own formula since 0°C isn't 0°F or 0 K.
Frequently asked questions
How do I convert Fahrenheit to Celsius?
Use the formula °C = (°F − 32) × 5/9. For example, 100 °F = 37.777778 °C.
How do I convert Celsius to Fahrenheit?
Use the formula °F = (°C × 9/5) + 32. For example, 100 °C = 212 °F.
Is the value I enter sent anywhere?
No. The conversion runs entirely in your browser, so nothing you type ever leaves your device.