To convert degrees Fahrenheit to degrees Celsius, use °C = (°F − 32) × 5/9. For example, 25 °F = -3.888888889 °C.
°C = (°F − 32) × 5/9
Degrees Fahrenheit to degrees Celsius table
| Degrees Fahrenheit (°F) | Degrees 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 |
| 100 | 37.77777778 |
The two units
Degree Fahrenheit (°F). Water freezes at 32 °F and boils at about 212 °F at sea level. One degree Fahrenheit is 5/9 of a kelvin.
Degree Celsius (°C). Water freezes at 0 °C and boils at about 100 °C at sea level. A step of one degree Celsius equals one kelvin.
Convert degrees Fahrenheit to other units
Convert other units to degrees Celsius
Questions people ask
- How many degrees Celsius are in a degree Fahrenheit?
- °C = (°F − 32) × 5/9, so 0 °F = -17.77777778 °C.
- How do you convert degrees Fahrenheit to degrees Celsius?
- °C = (°F − 32) × 5/9. Temperature scales have different zero points, so a plain multiplication does not work.
- How do you convert degrees Celsius back to degrees Fahrenheit?
- °F = °C × 9/5 + 32. See degrees Celsius to degrees Fahrenheit.
Results use the legal definitions of each unit and are checked against the Pint unit library. Display rounds to 10 significant digits. All unit conversions · More tools
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