Temperature Conversion Formula and Calculator: Celsius to Fahrenheit

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.

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

• Another interesting (and fun!) 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!
• Want to convert a measurement to metric (or back)? Check out our handy conversion chart for the metric system.