Degrees Fahrenheit to Degrees Celsius Converter
Convert degrees Fahrenheit to degrees Celsius instantly with the exact formula: °C = (°F − 32) × 5/9. Type a temperature above and the result updates while you type.
Result
°C
Result updates as you type. Values are calculated locally in your browser — nothing is sent to a server.
The formula
°C = (°F − 32) × 5/9
Degrees Fahrenheit to degrees Celsius conversion table
| °F | °C |
|---|---|
| -40 | -40 |
| -30 | -34.4444 |
| -20 | -28.8889 |
| -10 | -23.3333 |
| 0 | -17.7778 |
| 5 | -15 |
| 10 | -12.2222 |
| 15 | -9.44444 |
| 20 | -6.66667 |
| 25 | -3.88889 |
| 30 | -1.11111 |
| 37 | 2.77778 |
| 40 | 4.44444 |
| 50 | 10 |
| 75 | 23.8889 |
| 100 | 37.7778 |
Worked examples
- 10 °F = -12.2222 °C
- 25 °F = -3.88889 °C
- 37 °F = 2.77778 °C
Conversion factors follow the exact international definitions (SI/BIPM; imperial units per the 1959 International Yard and Pound Agreement, maintained by NIST). NIST unit conversion reference
Factors last verified August 2026 · Built by Jeffrey Tepper.
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Frequently asked questions
How many degrees Celsius are in 1 degree Fahrenheit?
1 degree Fahrenheit equals -17.2222 degrees Celsius (°F → °C).
How do you convert degrees Fahrenheit to degrees Celsius?
Use the formula °C = (°F − 32) × 5/9. For example: 25 °F equals -3.88889 °C.
What is 37 °F in °C?
37 °F equals 2.77778 °C.