Temperature Converter
Convert temperature between Celsius, Fahrenheit, Kelvin and Rankine instantly, with common reference points. Free online converter.
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Temperature
Equivalents
- Celsius
- 20
- Fahrenheit
- 68
- Kelvin
- 293.15
- Rankine
- 527.67
Where this sits
- Water freezes0 C / 32 F
- A cold room15 C / 59 F
- Room temperature21 C / 69.8 F
- Body temperature37 C / 98.6 F
- A hot day35 C / 95 F
- Water boils100 C / 212 F
What this tool is for
Celsius, Fahrenheit and Kelvin at once, with reference points marked so an unfamiliar number lands somewhere: freezing, body temperature, a hot day, boiling.
Fahrenheit to Celsius chart
Common temperatures already converted: room and weather temperatures, body temperature, and oven settings from American recipes. Values are rounded to one decimal place.
| Fahrenheit | Celsius |
|---|---|
| 0 °F | -17.8 °C |
| 32 °F | 0 °C |
| 50 °F | 10 °C |
| 60 °F | 15.6 °C |
| 65 °F | 18.3 °C |
| 68 °F | 20 °C |
| 69.8 °F | 21 °C |
| 70 °F | 21.1 °C |
| 72 °F | 22.2 °C |
| 75 °F | 23.9 °C |
| 77 °F | 25 °C |
| 80 °F | 26.7 °C |
| 86 °F | 30 °C |
| 90 °F | 32.2 °C |
| 95 °F | 35 °C |
| 98.6 °F | 37 °C |
| 100 °F | 37.8 °C |
| 104 °F | 40 °C |
| 212 °F | 100 °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 |
Celsius to Fahrenheit and Kelvin
| Celsius | Fahrenheit | Kelvin |
|---|---|---|
| -40 °C | -40 °F | 233.15 K |
| -20 °C | -4 °F | 253.15 K |
| -10 °C | 14 °F | 263.15 K |
| 0 °C | 32 °F | 273.15 K |
| 10 °C | 50 °F | 283.15 K |
| 15 °C | 59 °F | 288.15 K |
| 18 °C | 64.4 °F | 291.15 K |
| 20 °C | 68 °F | 293.15 K |
| 21 °C | 69.8 °F | 294.15 K |
| 22 °C | 71.6 °F | 295.15 K |
| 25 °C | 77 °F | 298.15 K |
| 30 °C | 86 °F | 303.15 K |
| 37 °C | 98.6 °F | 310.15 K |
| 38 °C | 100.4 °F | 311.15 K |
| 100 °C | 212 °F | 373.15 K |
| 180 °C | 356 °F | 453.15 K |
| 200 °C | 392 °F | 473.15 K |
| 220 °C | 428 °F | 493.15 K |
The formulas
Fahrenheit to Celsius: subtract 32, then multiply by 5/9. For 69.8 °F that is 37.8 x 5 / 9 = 21 °C.
Celsius to Fahrenheit: multiply by 9/5, then add 32. For 21 °C that is 37.8 + 32 = 69.8 °F.
Celsius to Kelvin: add 273.15. Kelvin has no degree sign and no negative values, since 0 K is absolute zero.
Oven dials in Europe are usually set in round steps, so a recipe asking for 350 °F is normally baked at 180 °C, and 400 °F at 200 °C. Fan ovens run hotter; reduce by about 20 °C.
How to use it
- Enter a temperature in any scale.
- Read the equivalents.
- Copy what you need.
Frequently asked questions
How do I convert Celsius to Fahrenheit in my head?
Double it and add 30 for a rough answer, which is close enough for weather. The exact formula multiplies by 1.8 and adds 32.
Where do the scales cross?
At minus 40, Celsius and Fahrenheit read the same number.