How to use Fahrenheit to Celsius
- Type a value in fahrenheit.
- Read the result in celsius (or type in the second box to convert back).
- Check the chart below for common values.
Quick facts
- Formula
- °C = (°F − 32) × 5 ÷ 9
- Handy for
- weather, ovens and body temperature
Fahrenheit to Celsius chart
| Fahrenheit (°F) | Celsius (°C) |
|---|---|
| -40 | -40 |
| 0 | -17.7778 |
| 32 | 0 |
| 40 | 4.4444 |
| 50 | 10 |
| 60 | 15.5556 |
| 68 | 20 |
| 70 | 21.1111 |
| 75 | 23.8889 |
| 80 | 26.6667 |
| 90 | 32.2222 |
| 98.6 | 37 |
| 100 | 37.7778 |
| 212 | 100 |
| 325 | 162.7778 |
| 350 | 176.6667 |
| 375 | 190.5556 |
| 400 | 204.4444 |
Questions
How do I convert fahrenheit to celsius?
Subtract 32, then multiply by 5/9. Formula: °C = (°F − 32) × 5 ÷ 9.
What is 40°F in celsius?
40°F is 4.44°C.
How do I convert celsius back to fahrenheit?
Use the reverse formula, or type in the second box above.
Last updated 13 November 2026.