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How do you convert Fahrenheit to Celsius?

Subtract 32, then divide by 1.8. For a quick weather estimate: subtract 30 and halve. 75 °F → (75 − 30) ÷ 2 ≈ 22 °C, against an exact 23.9 °C, close enough to pick what to wear.

°C = (°F − 32) ÷ 1.8

°F = °C × 1.8 + 32

Reference temperatures

0 °F−17.8 °C
20 °F−6.7 °C
32 °F (freezing)0 °C
50 °F10 °C
68 °F (room temp.)20 °C
86 °F30 °C
98.6 °F (body)37 °C
104 °F40 °C
212 °F (boiling)100 °C
350 °F (oven)177 °C
400 °F204.4 °C
Show every value
  • 1 °F = −17.2 °C
  • 2 °F = −16.7 °C
  • 3 °F = −16.1 °C
  • 4 °F = −15.6 °C
  • 5 °F = −15 °C
  • 6 °F = −14.4 °C
  • 7 °F = −13.9 °C
  • 8 °F = −13.3 °C
  • 9 °F = −12.8 °C
  • 10 °F = −12.2 °C
  • 11 °F = −11.7 °C
  • 12 °F = −11.1 °C
  • 13 °F = −10.6 °C
  • 14 °F = −10 °C
  • 15 °F = −9.4 °C
  • 16 °F = −8.9 °C
  • 17 °F = −8.3 °C
  • 18 °F = −7.8 °C
  • 19 °F = −7.2 °C
  • 20 °F = −6.7 °C
  • 21 °F = −6.1 °C
  • 22 °F = −5.6 °C
  • 23 °F = −5 °C
  • 24 °F = −4.4 °C
  • 25 °F = −3.9 °C
  • 26 °F = −3.3 °C
  • 27 °F = −2.8 °C
  • 28 °F = −2.2 °C
  • 29 °F = −1.7 °C
  • 30 °F = −1.1 °C
  • 31 °F = −0.6 °C
  • 32 °F = 0 °C
  • 33 °F = 0.6 °C
  • 34 °F = 1.1 °C
  • 35 °F = 1.7 °C
  • 36 °F = 2.2 °C
  • 37 °F = 2.8 °C
  • 38 °F = 3.3 °C
  • 39 °F = 3.9 °C
  • 40 °F = 4.4 °C
  • 41 °F = 5 °C
  • 42 °F = 5.6 °C
  • 43 °F = 6.1 °C
  • 44 °F = 6.7 °C
  • 45 °F = 7.2 °C
  • 46 °F = 7.8 °C
  • 47 °F = 8.3 °C
  • 48 °F = 8.9 °C
  • 49 °F = 9.4 °C
  • 50 °F = 10 °C
  • 51 °F = 10.6 °C
  • 52 °F = 11.1 °C
  • 53 °F = 11.7 °C
  • 54 °F = 12.2 °C
  • 55 °F = 12.8 °C
  • 56 °F = 13.3 °C
  • 57 °F = 13.9 °C
  • 58 °F = 14.4 °C
  • 59 °F = 15 °C
  • 60 °F = 15.6 °C
  • 61 °F = 16.1 °C
  • 62 °F = 16.7 °C
  • 63 °F = 17.2 °C
  • 64 °F = 17.8 °C
  • 65 °F = 18.3 °C
  • 66 °F = 18.9 °C
  • 67 °F = 19.4 °C
  • 68 °F = 20 °C
  • 69 °F = 20.6 °C
  • 70 °F = 21.1 °C
  • 71 °F = 21.7 °C
  • 72 °F = 22.2 °C
  • 73 °F = 22.8 °C
  • 74 °F = 23.3 °C
  • 75 °F = 23.9 °C
  • 76 °F = 24.4 °C
  • 77 °F = 25 °C
  • 78 °F = 25.6 °C
  • 79 °F = 26.1 °C
  • 80 °F = 26.7 °C
  • 81 °F = 27.2 °C
  • 82 °F = 27.8 °C
  • 83 °F = 28.3 °C
  • 84 °F = 28.9 °C
  • 85 °F = 29.4 °C
  • 86 °F = 30 °C
  • 87 °F = 30.6 °C
  • 88 °F = 31.1 °C
  • 89 °F = 31.7 °C
  • 90 °F = 32.2 °C
  • 91 °F = 32.8 °C
  • 92 °F = 33.3 °C
  • 93 °F = 33.9 °C
  • 94 °F = 34.4 °C
  • 95 °F = 35 °C
  • 96 °F = 35.6 °C
  • 97 °F = 36.1 °C
  • 98 °F = 36.7 °C
  • 99 °F = 37.2 °C
  • 100 °F = 37.8 °C
  • 125 °F = 51.7 °C
  • 150 °F = 65.6 °C
  • 175 °F = 79.4 °C
  • 200 °F = 93.3 °C
  • 225 °F = 107.2 °C
  • 250 °F = 121.1 °C
  • 275 °F = 135 °C
  • 300 °F = 148.9 °C
  • 325 °F = 162.8 °C
  • 350 °F = 176.7 °C
  • 375 °F = 190.6 °C
  • 400 °F = 204.4 °C
  • 425 °F = 218.3 °C
  • 450 °F = 232.2 °C
  • 475 °F = 246.1 °C
  • 500 °F = 260 °C
  • 550 °F = 287.8 °C
  • 600 °F = 315.6 °C
  • 650 °F = 343.3 °C
  • 700 °F = 371.1 °C
  • 750 °F = 398.9 °C
  • 800 °F = 426.7 °C
  • 850 °F = 454.4 °C
  • 900 °F = 482.2 °C
  • 950 °F = 510 °C
  • 1,000 °F = 537.8 °C
  • 1,500 °F = 815.6 °C
  • 2,000 °F = 1,093.3 °C
  • 2,500 °F = 1,371.1 °C
  • 3,000 °F = 1,648.9 °C
  • 3,500 °F = 1,926.7 °C
  • 4,000 °F = 2,204.4 °C
  • 4,500 °F = 2,482.2 °C
  • 5,000 °F = 2,760 °C
  • 5,500 °F = 3,037.8 °C
  • 6,000 °F = 3,315.6 °C
  • 6,500 °F = 3,593.3 °C
  • 7,000 °F = 3,871.1 °C
  • 7,500 °F = 4,148.9 °C
  • 8,000 °F = 4,426.7 °C
  • 8,500 °F = 4,704.4 °C
  • 9,000 °F = 4,982.2 °C
  • 9,500 °F = 5,260 °C
  • 10,000 °F = 5,537.8 °C

Official linear relationship between both scales, anchored on water's freezing (32 °F = 0 °C) and boiling points (212 °F = 100 °C) at standard atmospheric pressure. Methodology & sources.

Frequently asked questions

At what temperature do Fahrenheit and Celsius meet?

The two scales cross at −40 degrees: −40 °F is exactly −40 °C. It is the only point where both readings give the same number.

How do I set my oven from a US recipe?

American recipes usually call for 350 °F (177 °C), 375 °F (191 °C) or 400 °F (204 °C). Set your oven to the nearest metric mark: 180 °C, 190 °C or 200 °C.

Is 100 °F a fever?

100 °F is 37.8 °C, a mild fever. The usual medical threshold sits around 100.4 °F (38 °C), above the normal body temperature of 98.6 °F (37 °C).

Is one degree Fahrenheit the same size as one degree Celsius?

No, it is 5/9 of a Celsius degree. A 10 °F swing is therefore only 5.6 °C. That is why an American forecast sounds more dramatic: going from 60 to 80 °F seems spectacular when it is 15.6 to 26.7 °C. The Fahrenheit scale simply packs more graduations into the same interval.

How do I convert Fahrenheit in my head?

Subtract 30, then halve. 70 °F gives 20 °C, where the true value is 21.1. The approximation stays within a degree and a half between 40 and 100 °F, which is fine for weather but not for an oven or a fever. The exact formula subtracts 32 and divides by 1.8.

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