Learn how to easily convert Celsius to Fahrenheit and vice versa.
Convert F to C or C to F—and learn the formulas!
F to C: Fahrenheit to Celsius Conversion Calculator
| Fahrenheit | Celsius |
|---|---|
| °F | °C |
Enter a value for Fahrenheit or Celsius to convert to the other.
Looking to change Fahrenheit to Celsius or Celsius to Fahrenheit? Use our simple Celsius to Fahrenheit Temperature Converter, our temperature conversion charts, or calculate C to F or F to C yourself using the conversion formulas.
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About Fahrenheit and Celsius
The Fahrenheit temperature scale is named for German physicist Daniel Gabriel Fahrenheit and is the measurement of temperature commonly used by the United States (and its associated territories) and by several nations in the Caribbean. On the Fahrenheit scale, water freezes at 32°F and boils at 212°F (at sea level).
The Celsius temperature scale—originally called centigrade and later renamed for Swedish astronomer Anders Celsius—is used almost everywhere else in the world. On the Celsius scale, water freezes at 0°C and boils at 100°C (at sea level).
F° to C°: Fahrenheit to Celsius Conversion Formula
To convert temperatures in degrees Fahrenheit to Celsius, subtract 32 and multiply by .5556 (or 5/9).
- Example: (50°F - 32) x .5556 = 10°C
|
Fahrenheit |
Celsius |
|---|---|
| -40°F | -40°C |
| -30°F | -34°C |
| -20°F | -29°C |
| -10°F | -23°C |
| 0°F | -18°C |
| 10°F | -12°C |
| 20°F | -7°C |
| 32°F | 0°C |
| 40°F | 4°C |
| 50°F | 10°C |
| 60°F | 16°C |
| 70°F | 21°C |
| 80°F | 27°C |
| 90°F | 32°C |
| 100°F | 38°C |
C° to F°: Celsius to Fahrenheit Conversion Formula
To convert temperatures in degrees Celsius to Fahrenheit, multiply by 1.8 (or 9/5) and add 32.
- Example: (30°C x 1.8) + 32 = 86°F
|
Celsius |
Fahrenheit |
|---|---|
| -40°C | -40°F |
| -30°C | -22°F |
| -20°C | -4°F |
| -10°C | 14°F |
| 0°C | 32°F |
| 10°C | 50°F |
| 20°C | 68°F |
| 30°C | 86°F |
| 40°C | 104°F |
| 50°C | 122°F |
| 60°C | 140°F |
| 70°C | 158°F |
| 80°C | 176°F |
| 90°C | 194°F |
| 100°C | 212°F |
Other Conversions
- Another interesting temperature conversion is turning cricket chirps into degrees Fahrenheit. Did you know that crickets can tell you how warm it is outside? Find out how to tell the temperature from cricket chirps here!
- Looking for some cooking conversions? This page has everything you need to know about easy substitutions and conversions in the kitchen.
- Want to convert a measurement to metric (or back)? Check out our handy conversion chart for the metric system.
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I spent four years in Montréal, where the weather forecast is always in Celsius; and I found that the easiest way to translate to the more familiar Fahrenheit was NOT to do the precise calculations in my head, or keep whipping out a device, but just to learn the 10s:
-20C = -4F
-10C = 14F
0C = 32F
10C = 50F
20C = 68F
30C = 86F
40C = 104F
That gets you in the right ballpark immediately, and I never found it important to distinguish between, say, 63 and 65 degrees F - especially because other factors, like wind speed and humidity, will make a much larger difference in how hot or cold you actually feel. That range - a mere seven numbers to commit to memory - is really all you need; anything below -20C is "too damn cold", and anything above 40C is "too damn hot".
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