Degrees Fahrenheit to degrees Celsius (°F to °C)
The answer, the exact formula and a table with the values people look up most.
1 °F = -17.2222 °C°C = (°F − 32) × 5/9Example: 80 °F = 26.6667 °C
1 °F = -17.22222222 °C
Temperature does not convert by multiplying: each scale starts at a different point. That is why 0 °C is 32 °F and not zero.
Conversions people ask for most
Convert degrees Fahrenheit to degrees Celsius
| °F | °C |
|---|---|
| -40 °F | -40 °C |
| 0 °F | -17.778 °C |
| 10 °F | -12.222 °C |
| 20 °F | -6.6667 °C |
| 32 °F | 0 °C |
| 40 °F | 4.4444 °C |
| 50 °F | 10 °C |
| 60 °F | 15.556 °C |
| 68 °F | 20 °C |
| 70 °F | 21.111 °C |
| 72 °F | 22.222 °C |
| 75 °F | 23.889 °C |
| 80 °F | 26.667 °C |
| 90 °F | 32.222 °C |
| 98.6 °F | 37 °C |
| 100 °F | 37.778 °C |
| 102 °F | 38.889 °C |
| 104 °F | 40 °C |
| 212 °F | 100 °C |
| 350 °F | 176.67 °C |
| 375 °F | 190.56 °C |
| 400 °F | 204.44 °C |
| 425 °F | 218.33 °C |
| 450 °F | 232.22 °C |
The table rounds to a few decimals; the converter above gives up to 10 significant digits.
The two units
Degree Fahrenheit °F
On the Fahrenheit scale water freezes at 32 °F and boils at 212 °F; it is used mainly in the United States.
Degree Celsius °C
The Celsius scale puts water freezing at 0 °C and boiling at 100 °C at sea level; almost every country uses it.
Frequently asked questions
How many degrees Celsius are 80 degrees Fahrenheit?
80 °F = 26.6667 °C.
What is the formula to convert degrees Fahrenheit to degrees Celsius?
°C = (°F − 32) × 5/9. 80 °F = 26.6667 °C.
Is this conversion exact?
Yes. Temperature scales are not proportional — besides the ratio 9/5 there is a 32-degree offset — so you cannot convert with a single factor; the formula above is exact.