Convert Fahrenheit to Celsius
1 °F = -17.222222 °C. Change the amount below, or read the formula and the reference table further down.
1 Fahrenheit equals
Celsius
1 °F = -17.222222 °C
The formula
Fahrenheit and Celsius do not share a zero point, so the conversion needs an offset as well as a scale factor.
°C = (°F × 0.55555556 − 17.777778 − 0) ÷ 1
Going the other way? Convert Celsius to Fahrenheit.
Fahrenheit to Celsius table
Common values, rounded for reading.
| Fahrenheit (°F) | Celsius (°C) |
|---|---|
| 1 | -17.2222 |
| 2 | -16.6667 |
| 3 | -16.1111 |
| 4 | -15.5556 |
| 5 | -15 |
| 6 | -14.4444 |
| 7 | -13.8889 |
| 8 | -13.3333 |
| 9 | -12.7778 |
| 10 | -12.2222 |
| 15 | -9.4444 |
| 20 | -6.6667 |
| 25 | -3.8889 |
| 30 | -1.1111 |
| 40 | 4.4444 |
| 50 | 10 |
| 75 | 23.8889 |
| 100 | 37.7778 |
| 250 | 121.11 |
| 500 | 260 |
| 1,000 | 537.78 |
Questions people ask
- What is 1 °F in Celsius?
- 1 °F is -17.222222 °C. The two scales have different zero points, so the gap between them is not a fixed ratio.
- How do I convert Fahrenheit to Celsius by hand?
- These scales have different zero points, so you cannot use a single multiplier. Apply °C = (°F × 0.55555556 − 17.777778 − 0) ÷ 1.
- What is 1 Fahrenheit in Celsius?
- 1 Fahrenheit is -17.222222 Celsius.
Calcuit generates this page from a unit table, so the factors here match every other page on the site.