Degrees Fahrenheit to Degrees Celsius (°F to °C)
°C = (°F − 32) × 5/9. Type a temperature; the result updates as you type.
degrees Celsius
50 °F = 10 °C · degrees Celsius to degrees Fahrenheit page
How to convert degrees Fahrenheit to degrees Celsius
- Subtract 32 from the Fahrenheit value.
- Multiply by 5/9 (that is, by 0.5556).
- Example: (50 − 32) = 18; × 5/9 = 10 °C.
Where this comes up
Subtract 32, then multiply by 5/9. US weather and oven temperatures: 100 °F is 37.8 °C, a 350 °F oven is 177 °C (set 180). Quick estimate: subtract 30 and halve.
| °F | °C |
|---|---|
| -40 | -40 |
| 0 | -17.7778 |
| 32 | 0 |
| 50 | 10 |
| 60 | 15.5556 |
| 70 | 21.1111 |
| 75 | 23.8889 |
| 80 | 26.6667 |
| 90 | 32.2222 |
| 98.6 | 37 |
| 100 | 37.7778 |
| 104 | 40 |
| 110 | 43.3333 |
| 212 | 100 |
| 350 | 176.6667 |
| 400 | 204.4444 |
Questions people ask
What is the formula to convert degrees Fahrenheit to degrees Celsius?
°C = (°F − 32) × 5/9. Subtract 32 from the Fahrenheit value, then multiply by 0.5556.
What is 90 °F in °C?
90 °F is 32.22 °C.
Is there a quick way to estimate it in my head?
Subtract 30 and halve. 70 °F → 20, actual 21.1 °C.
At what temperature are Celsius and Fahrenheit equal?
−40. It is the only point where both scales read the same number.
More temperature conversions
Degrees Celsius to Degrees Fahrenheit (°C to °F) · · all converters
Factors are the exact international definitions; last checked 2026-10-10.