Enter a temperature in degrees Fahrenheit to get it in Celsius, with the formula worked through, the same temperature in Kelvin, and a quick way to check it in your head.
100 °F in Celsius
37.7778 °C
Kelvin
310.93 K
°C = (°F − 32) × 5/9: (100 − 32) × 5/9 = 37.7778.
A quick check: take away 30 and halve it, 35 °C, close to the exact 37.8 °C for everyday temperatures.
Multiply by 5, then divide by 9 (the same as dividing by 1.8).
Worked example
A hot day of 95 °F: 95 − 32 = 63, and 63 × 5 ÷ 9 = 35 °C. A room at 68 °F is 20 °C, and an oven at 450 °F is 232.22 °C.
Fahrenheit to Celsius chart
Fahrenheit to Celsius, rounded to 2 decimals, with common oven temperatures
°F
°C
−40 °F
−40 °C
0 °F
−17.78 °C
32 °F
0 °C
50 °F
10 °C
60 °F
15.56 °C
70 °F
21.11 °C
75 °F
23.89 °C
80 °F
26.67 °C
90 °F
32.22 °C
98.6 °F
37 °C
100 °F
37.78 °C
104 °F
40 °C
212 °F
100 °C
300 °F
148.89 °C
325 °F
162.78 °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
Water freezes at 32 °F (0 °C) and boils at 212 °F (100 °C) at sea level, so 180 Fahrenheit degrees span 100 Celsius degrees: hence 5/9. Everything runs in your browser.
Frequently asked questions
What is the formula to convert Fahrenheit to Celsius?
Take away 32, then multiply by 5/9: °C = (°F − 32) × 5/9. For 100 °F, 100 − 32 = 68, and 68 × 5 ÷ 9 = 37.78 °C.
What is 98.6 °F in Celsius?
Exactly 37 °C, the figure usually given for normal body temperature. 100.4 °F is 38 °C.
How do I convert oven temperatures from °F to °C?
350 °F is 176.67 °C, 375 °F is 190.56 °C, 400 °F is 204.44 °C and 425 °F is 218.33 °C. Recipes usually round these to 180, 190, 200 and 220 °C.
Is there a quick way to convert °F to °C in my head?
Take away 30 and halve it. It's exact at 50 °F (10 °C) and close for weather: 70 °F gives 20 against the exact 21.11 °C, and 90 °F gives 30 against 32.22 °C.
What is 0 °F in Celsius?
−17.78 °C. Fahrenheit's zero is far below the freezing point of water, which is 32 °F (0 °C).
