When you need this conversion
Weather forecasts, oven settings, fevers, pools and fish tanks, and science. The US uses Fahrenheit for daily life; almost everywhere else uses Celsius.
Reference points
- −40 °C = −40 °F (the scales cross)
- 0 °C = 32 °F (water freezes)
- 20 °C = 68 °F (room temperature)
- 37 °C = 98.6 °F (body temperature)
- 100 °C = 212 °F (water boils at sea level)
Oven temperatures
- 150 °C = 302 °F (often listed as 300 °F)
- 180 °C = 356 °F (often listed as 350 °F)
- 200 °C = 392 °F (often listed as 400 °F)
- 220 °C = 428 °F (often listed as 425 °F)
Recipes round to the nearest 25 °F. For gas marks and fan ovens, use the oven temperature converter.
Common mistakes
Adding 32 before multiplying. The order matters: multiply by 1.8 first, then add 32.
Converting a temperature difference like a temperature. A change of 10 °C is a change of 18 °F; don’t add the 32.
For the reverse, use Fahrenheit to Celsius.