Convert Fahrenheit to Celsius.
Input the value of fahrenheit below to convert instantly to celsius with standard conversions, definitions, and equations.
About converting fahrenheit to celsius
Fahrenheit to Celsius is what the rest of the world reaches for when reading a US weather forecast, oven dial, or thermostat.
The formula is °C = (°F − 32) × 5/9. You subtract 32 first to remove the offset between the freezing points, then multiply by 5/9 to rescale the smaller Fahrenheit degrees into larger Celsius ones. So 100 °F is (100 − 32) × 5/9 = 37.8 °C, just above body temperature.
Getting the order right matters: subtract before you multiply. Doing it the other way produces a wrong answer because the 32-degree offset must be cleared while you are still on the Fahrenheit scale. This is the most common mistake people make with temperature conversion.
- Fast approximation: subtract 30 then halve (70 − 30 = 40, ÷2 = 20, close to the exact 21).
- Useful anchors: 32 °F = 0 °C, 212 °F = 100 °C, 98.6 °F = 37 °C.
How to Convert Fahrenheit to Celsius
To convert fahrenheit to celsius, we use the official conversion formulas. Below is the mathematical formula, plain-English explanation, and a worked example.
Fahrenheit (°F)
Temperature scale primarily used in the US, where water freezes at 32°F and boils at 212°F.
Celsius (°C)
The standard metric temperature scale, where water freezes at 0°C and boils at 100°C.
Fahrenheit to Celsius Conversion Table
| Fahrenheit (°F) | Celsius (°C) |
|---|---|
| 1 °F | -17.22222 °C |
| 2 °F | -16.66667 °C |
| 3 °F | -16.11111 °C |
| 5 °F | -15 °C |
| 10 °F | -12.22222 °C |
| 15 °F | -9.44444 °C |
| 20 °F | -6.66667 °C |
| 25 °F | -3.88889 °C |
| 50 °F | 10 °C |
| 100 °F | 37.77778 °C |
| 250 °F | 121.11111 °C |
| 500 °F | 260 °C |
| 1000 °F | 537.77778 °C |
Celsius to Fahrenheit Conversion Table
| Celsius (°C) | Fahrenheit (°F) |
|---|---|
| 1 °C | 33.8 °F |
| 2 °C | 35.6 °F |
| 3 °C | 37.4 °F |
| 5 °C | 41 °F |
| 10 °C | 50 °F |
| 15 °C | 59 °F |
| 20 °C | 68 °F |
| 25 °C | 77 °F |
| 50 °C | 122 °F |
| 100 °C | 212 °F |
| 250 °C | 482 °F |
| 500 °C | 932 °F |
| 1000 °C | 1832 °F |