Conversion formula
°F = °C × 9/5 + 32
Mental math shortcut: double the Celsius temperature and add 30. 20 °C × 2 + 30 = 70 °F (the exact value is 68 °F).
The two scales meet at −40: −40 °C is exactly −40 °F. Water freezes at 0 °C (32 °F) and boils at 100 °C (212 °F) at sea level.
Conversion chart
| Celsius | Fahrenheit |
|---|---|
| -40 °C | -40 °F |
| -30 °C | -22 °F |
| -20 °C | -4 °F |
| -10 °C | 14 °F |
| 0 °C | 32 °F |
| 10 °C | 50 °F |
| 20 °C | 68 °F |
| 22 °C | 71.6 °F |
| 25 °C | 77 °F |
| 30 °C | 86 °F |
| 37 °C | 98.6 °F |
| 40 °C | 104 °F |
| 100 °C | 212 °F |
| 180 °C | 356 °F |
| 200 °C | 392 °F |
| 220 °C | 428 °F |
Oven temperatures
American recipes give oven temperatures in Fahrenheit: 350 °F is 177 °C (often set to 180 °C), 375 °F is 190 °C, 400 °F is 205 °C and 425 °F is 220 °C.