When you need this conversion
US recipes and oven dials, American weather forecasts, thermostats, and medical thermometers set to Fahrenheit.
Reference points
- 0 °F = −17.78 °C
- 32 °F = 0 °C (freezing)
- 50 °F = 10 °C
- 68 °F = 20 °C
- 98.6 °F = 37 °C
- 212 °F = 100 °C (boiling)
Oven temperatures
- 300 °F = 148.89 °C (use 150 °C)
- 325 °F = 162.78 °C (use 160–170 °C)
- 350 °F = 176.67 °C (use 180 °C)
- 400 °F = 204.44 °C (use 200 °C)
- 425 °F = 218.33 °C (use 220 °C)
European ovens often have a fan; set them about 20 °C lower than the conventional value.
Common mistakes
Multiplying before subtracting. (350 × 5/9) − 32 gives 162 °C, which is wrong. Subtract 32 first.
Converting differences with the offset. A rise of 18 °F is a rise of 10 °C.
For the reverse, use Celsius to Fahrenheit.