Fahrenheit to Celsius Converter (Fahrenheit to Celsius)
Enter a temperature in degrees Fahrenheit to see it in degrees Celsius instantly, or type in the °C box to convert the other way. 20 °F = -6.6666667 °C. Water freezes at 32 °F (0 °C) and boils at 212 °F (100 °C).
A quick mental estimate: subtract 30 and halve. 80 °F is about 25 °C (exact: 26.7 °C). Recipe oven temperatures round to the nearest 5 or 10 degrees: 350 °F is 177 °C, usually set as 180 °C.
20 degrees Fahrenheit = -6.6666667 degrees Celsius. Formula: °C = (°F − 32) × 5/9
20 degrees Fahrenheit in all temperature units
| Degrees Celsius (°C) | -6.6666667 |
| Kelvins (K) | 266.48333 |
How to convert degrees Fahrenheit to degrees Celsius
°C = (°F − 32) × 5/9
Temperature scales have different zero points, so the conversion has an offset as well as a ratio. To go the other way: °F = °C × 9/5 + 32.
Example: 20 °F converts to -6.6666667 °C.
Fahrenheit to Celsius conversion table
| Degrees Fahrenheit | Degrees Celsius |
|---|---|
| -40 °F | -40 °C |
| -30 °F | -34.444444 °C |
| -20 °F | -28.888889 °C |
| -10 °F | -23.333333 °C |
| 0 °F | -17.777778 °C |
| 5 °F | -15 °C |
| 10 °F | -12.222222 °C |
| 15 °F | -9.4444444 °C |
| 20 °F | -6.6666667 °C |
| 25 °F | -3.8888889 °C |
| 30 °F | -1.1111111 °C |
| 32 °F | 0 °C |
| 35 °F | 1.6666667 °C |
| 37 °F | 2.7777778 °C |
| 40 °F | 4.4444444 °C |
| 45 °F | 7.2222222 °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 |
| 180 °F | 82.222222 °C |
| 200 °F | 93.333333 °C |
| 212 °F | 100 °C |
| 250 °F | 121.11111 °C |
| 300 °F | 148.88889 °C |
| 350 °F | 176.66667 °C |
| 400 °F | 204.44444 °C |
| Degrees Celsius | Degrees Fahrenheit |
|---|---|
| -40 °C | -40 °F |
| -30 °C | -22 °F |
| -20 °C | -4 °F |
| -10 °C | 14 °F |
| 0 °C | 32 °F |
| 5 °C | 41 °F |
| 10 °C | 50 °F |
| 15 °C | 59 °F |
| 20 °C | 68 °F |
| 25 °C | 77 °F |
| 30 °C | 86 °F |
| 32 °C | 89.6 °F |
| 35 °C | 95 °F |
| 37 °C | 98.6 °F |
| 40 °C | 104 °F |
| 45 °C | 113 °F |
| 50 °C | 122 °F |
| 60 °C | 140 °F |
| 70 °C | 158 °F |
| 80 °C | 176 °F |
| 90 °C | 194 °F |
| 98.6 °C | 209.48 °F |
| 100 °C | 212 °F |
| 150 °C | 302 °F |
| 180 °C | 356 °F |
| 200 °C | 392 °F |
| 212 °C | 413.6 °F |
| 250 °C | 482 °F |
| 300 °C | 572 °F |
| 350 °C | 662 °F |
| 400 °C | 752 °F |
About the fahrenheit and the celsius
Fahrenheit sets 32 at the freezing point of water and 212 at its boiling point, so one Fahrenheit degree is 5/9 of a Celsius degree. It is the everyday temperature scale in the United States.
Celsius sets 0 at the freezing point of water and 100 at its boiling point at sea level. It is used for weather, cooking and body temperature almost everywhere except the US.
Frequently asked questions
What is the formula to convert degrees Fahrenheit to degrees Celsius?
°C = (°F − 32) × 5/9. For example, 20 °F = -6.6666667 °C. The reverse is °F = °C × 9/5 + 32.
At what temperature are Celsius and Fahrenheit the same?
At −40 degrees. −40 °C and −40 °F are the same temperature, which is the only point where the two scales cross.
What is normal body temperature in degrees Celsius?
About 37 °C, which is 37 °C or 98.6 °F. A reading of 38 °C (38 °C) or above is generally considered a fever.
Is the Fahrenheit to Celsius conversion exact?
Yes. The Celsius and Fahrenheit scales are defined so that water freezes at 0 °C = 32 °F and boils at 100 °C = 212 °F at standard pressure, which fixes the ratio at exactly 9/5 and the offset at exactly 32. Kelvin is Celsius plus exactly 273.15.
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Last updated . Formulas are shown on the page and checked against the worked example.
Conversion factors are exact international definitions where one exists and standard reference values elsewhere. Results are rounded to 8 significant digits.