Convert Fahrenheit to Celsius
1 °F = -17.222222 °C. Enter any value below.
Converted to every unit
Advertisement
Fahrenheit to Celsius formula
°C = (°F − 32) × 5/9
The Fahrenheit scale, used in the US, puts water's freezing point at 32 °F and boiling point at 212 °F. The Celsius scale sets water's freezing point at 0 °C and boiling point at 100 °C at sea level.
Worked example
Using the formula, 25 °F = -3.888889 °C.
Fahrenheit to Celsius conversion table
| Fahrenheit | Celsius |
|---|---|
| -40 °F | -40 °C |
| -20 °F | -28.888889 °C |
| -10 °F | -23.333333 °C |
| 0 °F | -17.777778 °C |
| 10 °F | -12.222222 °C |
| 20 °F | -6.666667 °C |
| 25 °F | -3.888889 °C |
| 30 °F | -1.111111 °C |
| 32 °F | 0 °C |
| 37 °F | 2.777778 °C |
| 40 °F | 4.444444 °C |
| 50 °F | 10 °C |
| 60 °F | 15.555556 °C |
| 70 °F | 21.111111 °C |
| 80 °F | 26.666667 °C |
| 90 °F | 32.222222 °C |
| 98.6 °F | 37 °C |
| 100 °F | 37.777778 °C |
| 150 °F | 65.555556 °C |
| 200 °F | 93.333333 °C |
| 212 °F | 100 °C |
| 300 °F | 148.888889 °C |
| 350 °F | 176.666667 °C |
| 400 °F | 204.444444 °C |
| 450 °F | 232.222222 °C |
| 500 °F | 260 °C |
Frequently asked questions
What is 0 °F in Celsius?
0 °F equals -17.777778 °C.
How do I convert fahrenheit to celsius?
Use the formula °C = (°F − 32) × 5/9. For example, 25 °F = -3.888889 °C.
Last reviewed: October 2026 · Uses exact, internationally defined conversion factors.