The short answer
- °C = (°F − 32) × 5/9
- 0 °F = −17.77778 °C
- 100 °F = 37.77778 °C
Worked example98.6 °F = 37 °C
To convert degrees Fahrenheit to degrees Celsius, use °C = (°F − 32) × 5/9.
Degree fahrenheit. On the Fahrenheit scale water freezes at 32 °F and boils at 212 °F, so a change of 1 °F is 5/9 of a degree Celsius.
Degree celsius. The Celsius scale puts the freezing point of water at 0 °C and its boiling point at sea level at 100 °C. 0 °C is 273.15 K.
| Degrees fahrenheit (°F) | Degrees celsius (°C) |
|---|---|
| −40 | −40 |
| 0 | −17.77778 |
| 10 | −12.22222 |
| 20 | −6.666667 |
| 32 | 0 |
| 40 | 4.444444 |
| 50 | 10 |
| 60 | 15.55556 |
| 65 | 18.33333 |
| 68 | 20 |
| 70 | 21.11111 |
| 72 | 22.22222 |
| 75 | 23.88889 |
| 80 | 26.66667 |
| 90 | 32.22222 |
| 98.6 | 37 |
| 100 | 37.77778 |
| 104 | 40 |
| 110 | 43.33333 |
| 120 | 48.88889 |
| 150 | 65.55556 |
| 200 | 93.33333 |
| 212 | 100 |
| 250 | 121.1111 |
| 300 | 148.8889 |
| 350 | 176.6667 |
| 375 | 190.5556 |
| 400 | 204.4444 |
| 425 | 218.3333 |
| 450 | 232.2222 |
Values are rounded to 7 significant figures.
Use °C = (°F − 32) × 5/9. For example, 98.6 °F = 37 °C.
98.6 °F is 37 °C.
Yes. Both units have exact legal definitions, so the factor is exact. Values on this page are rounded to 7 significant figures.