Fahrenheit to Celsius
Convert Fahrenheit (°F) to Celsius (°C) instantly, with a formula, reference table, and FAQ.
Formula
Celsius = (Fahrenheit × 0.555556) + -17.7778
Fahrenheit (°F) and Celsius (°C) are both units of temperature. Use the converter above for any value, or check the quick-reference table below for common amounts.
Quick reference
| °F | °C |
|---|---|
| 1 °F | -17.2222 °C |
| 5 °F | -15 °C |
| 10 °F | -12.2222 °C |
| 25 °F | -3.88889 °C |
| 50 °F | 10 °C |
| 100 °F | 37.7778 °C |
| 500 °F | 260 °C |
| 1000 °F | 537.778 °C |
Frequently asked questions
How many Celsius is one Fahrenheit?
One Fahrenheit (°F) equals -17.2222 Celsius (°C).
How do I convert Fahrenheit to Celsius?
Multiply the value in Fahrenheit by 0.555556, then add -17.7778, to get Celsius.
Is the Fahrenheit to Celsius conversion exact?
Yes — this converter uses the internationally defined conversion factor between fahrenheit and celsius, accurate to several decimal places.