Fahrenheit to Celsius Conversion
Fahrenheit and Celsius are related by a formula rather than a fixed ratio — see the worked example below.
1 Fahrenheit = -17.22222222 Celsius
How to convert Fahrenheit to Celsius
- Celsius to Fahrenheit
°F = °C × 9/5 + 32 - Fahrenheit to Celsius
°C = (°F − 32) × 5/9 - Celsius to Kelvin
K = °C + 273.15 - Fahrenheit to Rankine
°R = °F + 459.67
Example: 10 °F = -12.22222222 °C.
Watch out: To convert a temperature change rather than a reading — for example "the oven got 10 degrees hotter" — use the Temperature Interval converter, which has no offset.
Fahrenheit to Celsius conversion table
| Fahrenheit (°F) | Celsius (°C) |
|---|---|
| -40 | -40 |
| -20 | -28.88888889 |
| -10 | -23.33333333 |
| 0 | -17.77777778 |
| 10 | -12.22222222 |
| 20 | -6.666666667 |
| 25 | -3.888888889 |
| 30 | -1.111111111 |
| 37 | 2.777777778 |
| 40 | 4.444444444 |
| 50 | 10 |
| 60 | 15.55555556 |
| 80 | 26.66666667 |
| 100 | 37.77777778 |
| 180 | 82.22222222 |
| 200 | 93.33333333 |
Frequently asked questions
What is 1 Fahrenheit in Celsius?
1 Fahrenheit (°F) is -17.22222222 Celsius (°C).
What is 1 Celsius in Fahrenheit?
1 Celsius (°C) is 33.8 Fahrenheit (°F).
How do I convert Fahrenheit to Celsius?
Fahrenheit and Celsius are not related by a single multiplication factor. The formulas used are: Celsius to Fahrenheit: °F = °C × 9/5 + 32; Fahrenheit to Celsius: °C = (°F − 32) × 5/9; Celsius to Kelvin: K = °C + 273.15; Fahrenheit to Rankine: °R = °F + 459.67. For example, 5 °F is -15 °C.
How many units does the temperature converter support?
It converts between 4 units: Celsius, Fahrenheit, Kelvin, Rankine.
What should I watch out for when converting temperature?
To convert a temperature change rather than a reading — for example "the oven got 10 degrees hotter" — use the Temperature Interval converter, which has no offset.
More temperature conversions
Full converter
For any other temperature unit, use the full Temperature Converter.