Fahrenheit to Celsius — °F to °C

Enter a value to convert fahrenheit (°F) to celsius (°C). Works in your browser with no sign-up.

[ °F / °C — Temperature ] instant · works offline
Fahrenheit · °F
-17.22222
Celsius · °C
1 °F = -17.22222 °C
Fahrenheit → Celsius
⇄ Reverse: Celsius → Fahrenheit
Formula

°C = (°F − 32) × 5/9

Use the formula °C = (°F − 32) × 5/9. For example, 68 °F = 20 °C.

Quick Reference — Fahrenheit to Celsius
About Temperature Units

Celsius is used for weather and cooking almost everywhere except the United States, which uses Fahrenheit. Kelvin is the scientific absolute scale: 0 K is absolute zero (−273.15 °C). Handy reference points: water freezes at 0 °C (32 °F) and boils at 100 °C (212 °F) at sea level, and −40 is the same in both Celsius and Fahrenheit.

Related Conversions
°C → °F °F → K K → °C All temperature units
All Temperature Conversions
→Celsius to fahrenheit →Celsius to kelvin →Fahrenheit to kelvin →Kelvin to celsius →Kelvin to fahrenheit
FAQ — Fahrenheit to Celsius

How do I convert fahrenheit to celsius?

Use the formula °C = (°F − 32) × 5/9. For example, 68 °F = 20 °C.

What is 1 °F in Celsius?

1 degree Fahrenheit = -17.22222 °C.

At what temperature are Celsius and Fahrenheit equal?

At −40: −40 °C is exactly −40 °F.

Does this converter work offline?

Yes. Once the page has loaded, conversions run entirely in your browser and nothing is sent to a server.