How to convert degrees Fahrenheit to degrees Celsius
To go from Fahrenheit to Celsius, first take away 32, then multiply by 5/9. The order matters: the two scales have different zero points (water freezes at 32°F = 0°C).
Formula: °C = (°F − 32) × 5/9
Example: 100°F − 32 = 68, × 5/9 = 37.8°C
°F to °C table
| Degrees Fahrenheit (°F) | Degrees Celsius (°C) |
|---|---|
| −40 | −40 |
| 0 | −17.8 |
| 10 | −12.2 |
| 20 | −6.7 |
| 32 | 0 |
| 40 | 4.4 |
| 50 | 10 |
| 60 | 15.6 |
| 68 | 20 |
| 70 | 21.1 |
| 75 | 23.9 |
| 80 | 26.7 |
| 90 | 32.2 |
| 98.6 | 37 |
| 100 | 37.8 |
| 104 | 40 |
| 212 | 100 |
| 300 | 148.9 |
| 325 | 162.8 |
| 350 | 176.7 |
| 375 | 190.6 |
| 400 | 204.4 |
| 425 | 218.3 |
| 450 | 232.2 |
Values are rounded to 1 decimal place.
Fahrenheit you meet every day
- Weather: 70°F = 21°C (mild), 90°F = 32°C (hot)
- Body: 98.6°F = 37°C; 100.4°F = 38°C is a fever
- Oven: 350°F = 177°C (gas mark 4), 400°F = 204°C
- Freezer: 0°F = −17.8°C
How to use it
- Type a number in the From box — the answer appears straight away
- Click Swap (⇄) to convert the other way, from degrees Celsius to degrees Fahrenheit
- Change the units or the category to convert anything else — length, weight, temperature, volume, speed and more
Frequently asked questions
What is the formula for Fahrenheit to Celsius?
Subtract 32, then multiply by 5/9 (about 0.556). 50°F − 32 = 18, × 5/9 = 10°C.
Is there a quick way to convert F to C?
Take away 30 and halve it: 80°F → 50 ÷ 2 = 25°C (exact: 26.7°C).
What is 350°F in Celsius?
176.7°C — recipes usually say 180°C.
Is my data sent anywhere?
No. The conversion runs in your browser, on your own device.
Related tools
- Unit Converter — every unit in one place
