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Temperature Conversion Formula and Calculator: Celsius to Fahrenheit

temperature conversion calculator, blue sky with clouds with a thermometer in view. Celsius and Fahrenheit

Find the Temperature Conversion Formula, Chart, and Calculator!

Written By: Catherine Boeckmann Executive Digital Editor and Master Gardener

F to C: Fahrenheit to Celsius Conversion Calculator

Fahrenheit Celsius
°F °C

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

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

Weather References

About The Author

Catherine Boeckmann

Catherine Boeckmann

Executive Digital Editor and Master Gardener

Catherine Boeckmann is the Executive Digital Editor of Almanac.com, the digital home of The Old Farmer’s Almanac. She leads digital editorial strategy and publishing across a wide range of Almanac sub...

Read more from Catherine Boeckmann

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Comments

<span>Person111</span> Sun, 10/02/2016 - 06:02
Convert Celsius To Fahrenheit 20°c 1. Multiply # By 1.8 2. 20x1.8=36 3. Add (32) 4. 36+32=68 Convert Fahrenheit To Celsius 68°f 1. Subtract (32) From # 2. 68-32=36 3. Multiply by .5556 (or 5/9) 4. 36x.5556=20 4.1. Or 56 Instead Of .5556 4.2. 36x56=2016 4.3. Remove 16 Using Method 5 Divided By 9 1. Multiply By 5 2. 36x5=180 3. Divide By 9 4. Turn 9 To 10 5. 180/10 6. Half 180 To 90 And 10 To 5 7. Half 90 To 40 And 5 To 2 8. Half 40 to 20 And 2 To 1 9. 20/1=20 7. 40 is easier to half then 45 Keep going until you can't half 10 anymore or don't half 2 My notes to help remember this. Used to be good at math suck at it now
<span>Adra Godwin</span> Mon, 08/26/2019 - 19:13
please I need more examples on how to convert from f to c
<span>Lulu Saindon</span> Sat, 03/05/2016 - 17:49
This was very helpful! Thanks so much!
<span>Durgesh</span> Sun, 04/26/2015 - 14:37
82•F - 32 = 50 (now) 50*.556 = 27.8•C (exact)
<span>Debra Jackson</span> Mon, 01/12/2015 - 18:38
Unless you need the EXACT number, you can do a quick conversion in your head: 70F - 32 = 38 divided by 2 = 19, then add 1 or 2(remember, this is close enough, not exact)= 21C. The exact conversion would be 21.1. Another example is 40F - 32 = 8 divided by 2 = 4C. For a lower F temperature to start with, you don't have to add much. In this case, the exact conversion is 4.4.
<span>Cyrus Arnaiz</span> Wed, 01/07/2015 - 08:25
why is it so many formula method to convert in the different version?
<span>Sunil Kumar</span> Sun, 12/14/2014 - 11:44
F into C Subtract 32, multiplyng by 5, and Divided by 9 Ex- 50 F = C 50-32=18 18*5=90 90/9=10 C
<span>Israelsemgn</span> Thu, 08/07/2014 - 23:22
gud to understand but update the information day to day
<span>Mabab</span> Sun, 03/29/2015 - 15:16
Gud to start spelling correctly, too #itsspeltgood
<span>Asdasd</span> Thu, 12/12/2013 - 04:59
Easiest way: Google it. Type "convert x degrees Fahrenheit into Celsius" That goes for many measurements. For example, kg-pounds, m-inch and etc. It works both ways.