How to Convert Fahrenheit to Celsius With an Equation

Both Fahrenheit and Celsius measure temperature. Gabriel Fahrenheit's temperature scale of Fahrenheit is more common in the United States. In the rest of the world, the common unit is Celsius, named after founder Anders Celsius' centigrade scale. The foundation for the Celsius scale is the freezing and boiling points of water, which measure zero and 100 degrees Celsius, respectively. You can easily convert between the two units with a simple equation.

Things You'll Need

  • Thermometer

Instructions

    • 1

      Measure the temperature in Fahrenheit.

    • 2

      Write out the equation used for conversion:

      Celsius = (Fahrenheit - 32) x 5/9

    • 3

      Plug in your value for Fahrenheit and convert into Celsius. For example, If you measure boiling water at 212 degrees Fahrenheit:

      Celsius = (212 - 32) x 5/9

      Celsius = (180) x 5/9

      Celsius = 900/9

      Celsius = 100

      Therefore, the temperature of boiling water is 100 degrees Celsius

Tips & Warnings

  • To convert Celsius to Fahrenheit, use the equation:
  • Fahrenheit = (9/5 x Celsius) + 32
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References

  • Photo Credit temperature rising image by Keith Frith from Fotolia.com

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