Fahrenheit to Celsius
To convert Fahrenheit to Celsius, subtract 32 and multiply by 5/9. 32 °F is 0 °C, and each 1 °F step is 5/9 of a degree Celsius.
°C = (°F − 32) × 5/9
By Piero Nanni · Last checked
Fahrenheit to Celsius Calculator
68°F = 20°C
How to Convert Fahrenheit to Celsius
Formula:
°C = (°F − 32) × 5/9
Worked example:
(68 − 32) × 5/9 = 20 °C
Fahrenheit to Celsius Conversion Table
| °F | °C |
|---|---|
| -40 | -40 |
| -30 | -34.4444 |
| -20 | -28.8889 |
| -10 | -23.3333 |
| 0 | -17.7778 |
| 10 | -12.2222 |
| 20 | -6.6667 |
| 30 | -1.1111 |
| 32 | 0 |
| 40 | 4.4444 |
| 50 | 10 |
| 60 | 15.5556 |
| 68 | 20 |
| 70 | 21.1111 |
| 80 | 26.6667 |
| 90 | 32.2222 |
| 98.6 | 37 |
| 100 | 37.7778 |
| 110 | 43.3333 |
| 120 | 48.8889 |
| 130 | 54.4444 |
| 140 | 60 |
| 150 | 65.5556 |
| 160 | 71.1111 |
| 170 | 76.6667 |
| 180 | 82.2222 |
| 190 | 87.7778 |
| 200 | 93.3333 |
| 210 | 98.8889 |
| 212 | 100 |
| 220 | 104.4444 |
| 230 | 110 |
| 240 | 115.5556 |
| 250 | 121.1111 |
| 260 | 126.6667 |
| 270 | 132.2222 |
| 280 | 137.7778 |
| 290 | 143.3333 |
| 300 | 148.8889 |
| 310 | 154.4444 |
| 320 | 160 |
| 330 | 165.5556 |
| 340 | 171.1111 |
| 350 | 176.6667 |
| 360 | 182.2222 |
| 370 | 187.7778 |
| 380 | 193.3333 |
| 390 | 198.8889 |
| 400 | 204.4444 |
| 410 | 210 |
| 420 | 215.5556 |
| 425 | 218.3333 |
About This Conversion
Fahrenheit to Celsius comes up when reading US weather reports, US recipes, or the spec sheet of a product sold into the American market. The subtraction has to happen first: taking 5/9 of the Fahrenheit value before removing the 32-degree offset gives an answer that is wrong by about 18 degrees.
Useful anchors that need no arithmetic: 32 °F is freezing, 50 °F is 10 °C, 68 °F is 20 °C, 86 °F is 30 °C, and −40 is the same number on both scales. A US oven set to 350 °F is 177 °C, which is why European recipes call the same setting 180 °C.
Frequently Asked Questions
What is 70 °F in Celsius?
70 °F equals about 21.1 °C. Subtract 32 to get 38, then multiply by 5/9.
What is 350 °F in Celsius?
350 °F is about 176.7 °C, which recipes normally round to 180 °C.
Is 100 °F dangerous?
100 °F is about 37.8 °C. As a body temperature that is a mild fever; as an air temperature it is a hot but survivable day.
At what temperature do Celsius and Fahrenheit read the same?
At −40. −40 °F and −40 °C are the same physical temperature, the single point where the two scales cross.
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