Temperature Conversion: Celsius to Fahrenheit | F to C or C to F | The Old Farmer's Almanac

# Temperature Conversion Formula: Celsius to Fahrenheit

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## Find the temperature conversion formula, chart, and calculator!

### F to C: Fahrenheit to Celsius Conversion Calculator

Fahrenheit Celsius
°F °C

Enter a value for Fahrenheit or Celsius to convert to the other.

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Here’s a temperature conversion formula, chart, AND calculator to change Fahrenheit to Celsius or Celsius to Fahrenheit. Whether you want to understand the math or just want the answer now, you can go from C to F or F to C!

For those who just want an answer, above is our Temperature Conversion Calculator.

### The Temperature Conversion Formula

The conversion formulas we use are the standard ones that are used in most textbooks.

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

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’

Here are two handy charts that convert from F to C and also from C to F.

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

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