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.
°F = °C × 1.8 + 32
Reference temperatures
| 0 °F | −17.8 °C |
| 20 °F | −6.7 °C |
| 32 °F (freezing) | 0 °C |
| 50 °F | 10 °C |
| 68 °F (room temp.) | 20 °C |
| 86 °F | 30 °C |
| 98.6 °F (body) | 37 °C |
| 104 °F | 40 °C |
| 212 °F (boiling) | 100 °C |
| 350 °F (oven) | 177 °C |
| 400 °F | 204.4 °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.