Fahrenheit to Celsius Converter
Type a temperature in either box to convert °F to °C or °C to °F, with Kelvin shown too.
The formula
Water freezes at 32 °F (0 °C) and boils at 212 °F (100 °C), so 180 Fahrenheit degrees span the same range as 100 Celsius degrees. Subtract 32 and multiply by 5/9 to get Celsius; multiply by 9/5 and add 32 to get Fahrenheit.
100 °F = 37.78 °C
Fahrenheit to Celsius conversion table
| Fahrenheit (°F) | Celsius (°C) |
|---|---|
| -40 | -40 |
| -4 | -20 |
| 0 | -17.8 |
| 14 | -10 |
| 23 | -5 |
| 32 | 0 |
| 40 | 4.4 |
| 50 | 10 |
| 59 | 15 |
| 60 | 15.6 |
| 68 | 20 |
| 70 | 21.1 |
| 72 | 22.2 |
| 75 | 23.9 |
| 77 | 25 |
| 80 | 26.7 |
| 86 | 30 |
| 90 | 32.2 |
| 95 | 35 |
| 98.6 | 37 |
| 100 | 37.8 |
| 104 | 40 |
| 212 | 100 |
| 350 | 176.7 |
| 375 | 190.6 |
| 400 | 204.4 |
| 425 | 218.3 |
| 450 | 232.2 |
Celsius to Fahrenheit conversion table
| Celsius (°C) | Fahrenheit (°F) |
|---|---|
| -40 | -40 |
| -30 | -22 |
| -20 | -4 |
| -18 | -0.4 |
| -10 | 14 |
| -5 | 23 |
| 0 | 32 |
| 5 | 41 |
| 10 | 50 |
| 15 | 59 |
| 18 | 64.4 |
| 20 | 68 |
| 22 | 71.6 |
| 25 | 77 |
| 30 | 86 |
| 35 | 95 |
| 36.5 | 97.7 |
| 37 | 98.6 |
| 37.5 | 99.5 |
| 38 | 100.4 |
| 39 | 102.2 |
| 40 | 104 |
| 100 | 212 |
| 160 | 320 |
| 180 | 356 |
| 200 | 392 |
| 220 | 428 |
| 250 | 482 |
Good to know
−40 is the one temperature that reads the same on both scales.
Oven settings: 350 °F is 177 °C (often rounded to 180 °C), 400 °F is 204 °C and 425 °F is 218 °C.
Sources
Frequently asked questions
What is 100 °F in Celsius?
(100 − 32) × 5/9 = 37.8 °C, a mild fever. Normal body temperature, 98.6 °F, is 37 °C.
How do I convert Celsius to Fahrenheit?
Multiply by 9/5 (1.8) and add 32. 20 °C is 20 × 1.8 + 32 = 68 °F.
Is there a quick mental shortcut?
For weather, double the Celsius and add 30: 15 °C ≈ 60 °F (exactly 59 °F). Going the other way, subtract 30 and halve. The shortcut drifts at very high or low temperatures.