Temperature converter
Convert Celsius to Fahrenheit, With a Conversion Table
=
That reading is below absolute zero (-273.15°C / -459.67°F / 0 K) -
no physical temperature can be that low.
How to convert Celsius to Fahrenheit
°F = (°C × 9/5) + 32
To convert Celsius to Fahrenheit, multiply the Celsius temperature by 9/5 (that is, by 1.8) and add 32. The two scales place their zero points differently - 0°C is water’s freezing point while 0°F was the coldest brine mixture Daniel Fahrenheit could reproduce - and a Fahrenheit degree is only 5/9 the size of a Celsius degree.
A handy mental shortcut: double the Celsius value, subtract 10%, then add 32. For 20°C: 40 − 4 + 32 = 68°F, exactly right.
Worked examples
- Convert 20°C: 20 × 9/5 = 36; 36 + 32 = 68°F
- Convert 37°C (body temperature): 37 × 9/5 = 66.6; 66.6 + 32 = 98.6°F
- Convert -10°C: -10 × 9/5 = -18; -18 + 32 = 14°F
Celsius to Fahrenheit conversion table (°C to °F)
| Celsius (°C) | Fahrenheit (°F) |
|---|---|
| -40°C | -40°F |
| -35°C | -31°F |
| -30°C | -22°F |
| -25°C | -13°F |
| -20°C | -4°F |
| -15°C | 5°F |
| -10°C | 14°F |
| -5°C | 23°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 |
| 35°C | 95°F |
| 40°C | 104°F |
| 45°C | 113°F |
| 50°C | 122°F |
| 55°C | 131°F |
| 60°C | 140°F |
| 65°C | 149°F |
| 70°C | 158°F |
| 75°C | 167°F |
| 80°C | 176°F |
| 85°C | 185°F |
| 90°C | 194°F |
| 95°C | 203°F |
| 100°C | 212°F |
Full °C to °F table: -273.15°C to 1000°C (149 values)
| Celsius (°C) | Fahrenheit (°F) |
|---|---|
| -273.15°C | -459.67°F |
| -250°C | -418°F |
| -200°C | -328°F |
| -150°C | -238°F |
| -100°C | -148°F |
| -80°C | -112°F |
| -60°C | -76°F |
| -50°C | -58°F |
| -45°C | -49°F |
| -40°C | -40°F |
| -39°C | -38.2°F |
| -38°C | -36.4°F |
| -37°C | -34.6°F |
| -36°C | -32.8°F |
| -35°C | -31°F |
| -34°C | -29.2°F |
| -33°C | -27.4°F |
| -32°C | -25.6°F |
| -31°C | -23.8°F |
| -30°C | -22°F |
| -29°C | -20.2°F |
| -28°C | -18.4°F |
| -27°C | -16.6°F |
| -26°C | -14.8°F |
| -25°C | -13°F |
| -24°C | -11.2°F |
| -23°C | -9.4°F |
| -22°C | -7.6°F |
| -21°C | -5.8°F |
| -20°C | -4°F |
| -19°C | -2.2°F |
| -18°C | -0.4°F |
| -17°C | 1.4°F |
| -16°C | 3.2°F |
| -15°C | 5°F |
| -14°C | 6.8°F |
| -13°C | 8.6°F |
| -12°C | 10.4°F |
| -11°C | 12.2°F |
| -10°C | 14°F |
| -9°C | 15.8°F |
| -8°C | 17.6°F |
| -7°C | 19.4°F |
| -6°C | 21.2°F |
| -5°C | 23°F |
| -4°C | 24.8°F |
| -3°C | 26.6°F |
| -2°C | 28.4°F |
| -1°C | 30.2°F |
| 0°C | 32°F |
| 1°C | 33.8°F |
| 2°C | 35.6°F |
| 3°C | 37.4°F |
| 4°C | 39.2°F |
| 5°C | 41°F |
| 6°C | 42.8°F |
| 7°C | 44.6°F |
| 8°C | 46.4°F |
| 9°C | 48.2°F |
| 10°C | 50°F |
| 11°C | 51.8°F |
| 12°C | 53.6°F |
| 13°C | 55.4°F |
| 14°C | 57.2°F |
| 15°C | 59°F |
| 16°C | 60.8°F |
| 17°C | 62.6°F |
| 18°C | 64.4°F |
| 19°C | 66.2°F |
| 20°C | 68°F |
| 21°C | 69.8°F |
| 22°C | 71.6°F |
| 23°C | 73.4°F |
| 24°C | 75.2°F |
| 25°C | 77°F |
| 26°C | 78.8°F |
| 27°C | 80.6°F |
| 28°C | 82.4°F |
| 29°C | 84.2°F |
| 30°C | 86°F |
| 31°C | 87.8°F |
| 32°C | 89.6°F |
| 33°C | 91.4°F |
| 34°C | 93.2°F |
| 35°C | 95°F |
| 36°C | 96.8°F |
| 36.5°C | 97.7°F |
| 37°C | 98.6°F |
| 37.5°C | 99.5°F |
| 38°C | 100.4°F |
| 38.5°C | 101.3°F |
| 39°C | 102.2°F |
| 39.5°C | 103.1°F |
| 40°C | 104°F |
| 40.5°C | 104.9°F |
| 41°C | 105.8°F |
| 42°C | 107.6°F |
| 43°C | 109.4°F |
| 44°C | 111.2°F |
| 45°C | 113°F |
| 46°C | 114.8°F |
| 47°C | 116.6°F |
| 48°C | 118.4°F |
| 49°C | 120.2°F |
| 50°C | 122°F |
| 55°C | 131°F |
| 60°C | 140°F |
| 65°C | 149°F |
| 70°C | 158°F |
| 75°C | 167°F |
| 80°C | 176°F |
| 85°C | 185°F |
| 90°C | 194°F |
| 95°C | 203°F |
| 100°C | 212°F |
| 110°C | 230°F |
| 120°C | 248°F |
| 130°C | 266°F |
| 140°C | 284°F |
| 150°C | 302°F |
| 160°C | 320°F |
| 170°C | 338°F |
| 180°C | 356°F |
| 190°C | 374°F |
| 200°C | 392°F |
| 210°C | 410°F |
| 220°C | 428°F |
| 230°C | 446°F |
| 240°C | 464°F |
| 250°C | 482°F |
| 260°C | 500°F |
| 270°C | 518°F |
| 280°C | 536°F |
| 290°C | 554°F |
| 300°C | 572°F |
| 350°C | 662°F |
| 400°C | 752°F |
| 450°C | 842°F |
| 500°C | 932°F |
| 550°C | 1022°F |
| 600°C | 1112°F |
| 650°C | 1202°F |
| 700°C | 1292°F |
| 750°C | 1382°F |
| 800°C | 1472°F |
| 850°C | 1562°F |
| 900°C | 1652°F |
| 950°C | 1742°F |
| 1000°C | 1832°F |
Converting in your head
Double the Celsius figure and add 30. For 20°C that gives 70°F against an exact 68°F. The shortcut is within 2°F between about 0°C and 20°C and drifts further out at the extremes (at 35°C it says 100°F; the exact answer is 95°F).
Reference temperatures in °C and °F
| Reference point | °C | °F |
|---|---|---|
| Absolute zero | -273.15°C | -459.67°F |
| Arctic winter day | -30°C | -22°F |
| Home freezer | -18°C | -0.4°F |
| Water freezes / ice melts | 0°C | 32°F |
| Refrigerator | 3°C | 37.4°F |
| Cool spring day | 10°C | 50°F |
| Comfortable room | 21°C | 69.8°F |
| Summer afternoon | 30°C | 86°F |
| Normal body temperature | 37°C | 98.6°F |
| Hot bath | 40°C | 104°F |
| Death Valley record heat | 56.7°C | 134.06°F |
| Water boils (sea level) | 100°C | 212°F |
| Moderate oven | 180°C | 356°F |
Frequently asked questions
What is 25 degrees Celsius in Fahrenheit?
25°C equals 77°F - A warm, pleasant room or a mild summer day.
When are Celsius and Fahrenheit equal?
At -40. It is the single point where -40°C = -40°F, because the two scales converge there.
What is the fastest way to estimate °C to °F in my head?
Double the Celsius number and add 30. It lands within a few degrees for everyday temperatures (exact method: double it, subtract 10%, add 32).