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

Temperature Conversion Formula and Calculator: Celsius to Fahrenheit

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temperature conversion calculator, blue sky with clouds with a thermometer in view. Celsius and Fahrenheit
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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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What is 70°F in Celsius? What is 0°C in Fahrenheit? Here is the temperature conversion formula and chart to change Fahrenheit to Celsius or Celsius to Fahrenheit. We also have a Temperature Conversion Calculator for those who just want an answer!

The Temperature Conversion Formula

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

How Do You Convert Fahrenheit to Celsius?

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

How Do You Convert Celsius to Fahrenheit?

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 to Celsius Conversion Chart

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°F0°C
40°F4°C
50°F10°C
60°F16°C
70°F21°C
80°F27°C
90°F32°C
100°F38°C
Celsius to Fahrenheit Conversion Chart

Celsius

Fahrenheit

-40°C-40°F
-30°C-22°F
-20°C-4°F
-10°C14°F
0°C32°F
10°C50°F
20°C68°F
30°C86°F
40°C104°F
50°C122°F
60°C140°F
70°C158°F
80°C176°F
90°C194°F
100°C212°F

About Fahrenheit and Celsius

The Fahrenheit temperature scale is named for German physicist Daniel Gabriel Fahrenheit and is the temperature measurement commonly used by the United States (and its associated territories) and several Caribbean nations. 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, the freezing point of water is 0°C, and the boiling point of water is 100°C (at sea level).

Other Conversions

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