Seldons
fahrenheit to celsius
°C = (°F − 32) × 5/9
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How do you convert Fahrenheit to Celsius?
Use this formula. It is exact — these units are defined by international agreement, not measured.
°C = (°F − 32) × 5/9
Example: 100°F converts to 37.7778°C.
fahrenheit to celsius conversion table
Common values, rounded to six significant figures.
| °F | °C |
|---|---|
| -40 °F | -40 °C |
| 0 °F | -17.7778 °C |
| 32 °F | 0 °C |
| 50 °F | 10 °C |
| 68 °F | 20 °C |
| 72 °F | 22.2222 °C |
| 80 °F | 26.6667 °C |
| 90 °F | 32.2222 °C |
| 98.6 °F | 37 °C |
| 100 °F | 37.7778 °C |
| 104 °F | 40 °C |
| 180 °F | 82.2222 °C |
| 212 °F | 100 °C |
| 325 °F | 162.778 °C |
| 350 °F | 176.667 °C |
| 400 °F | 204.444 °C |
| 425 °F | 218.333 °C |
Weather, ovens and body temperature are the everyday cases. Unlike every other conversion here this one is not a ratio — the two scales have different zero points, so you subtract 32 before dividing by 1.8. The scales cross at −40, which is the one temperature that reads the same in both.
Values worth remembering
These come up often enough that knowing them saves a lookup.
- 32 °F = 0 °Cwater freezes
- 98.6 °F = 37 °Cbody temperature
- 212 °F = 100 °Cwater boils
- 350 °F = 176.667 °Ca moderate oven