How to Convert Celsius to Fahrenheit

Celsius to Fahrenheit Formula

Convert Celsius to Fahrenheit by multiplying the Celsius temperature by 1.8 and adding 32 to the value.
Convert Celsius to Fahrenheit by multiplying the Celsius temperature by 1.8 and adding 32 to the value. Michael Phillips / Getty Images

Temperature conversions are common, but you can't always look at a thermometer that lists both Celsius and Fahrenheit degrees. Here's the formula to convert Celsius to Fahrenheit, an explanation of the steps needed to use the formula, and an example conversion.

Formula to Convert Celsius to Fahrenheit

F = 1.8 + 32

where F is the temperature in degrees Fahrenheit and C is the temperature in degrees Celsius

The formula may also be written as:

F = 9/5 + 32

It is easy to convert Celsius to Fahrenheit with these two steps.

  1. Multiply your Celsius temperature by 1.8.
     
  2. Add 32 to this number.

Your answer will be the temperature in degrees Fahrenheit.

Note: If you're doing temperature conversions for a homework problem, take care to report the converted value using the same number of significant digits as the original number.

Celsius to Fahrenheit Example

Body temperature is 37°C. Convert this to Fahrenheit.

To do this, plug in the temperature into the equation:

F = 1.8 C + 32
F = (1.8)(37) + 32
F = 66.6 + 32
F = 98.6°

The original value, 37°C, has 2 significant digits, so the Fahrenheit temperature could be reported as 99°.

More Temperature Conversions

Do you need examples of how to perform other temperature conversions? Here are their formulas and worked examples.

How to Convert Fahrenheit to Celsius
How to Convert Celsius to Kelvin
How to Convert Fahrenheit to Kelvin
How to Convert Kelvin to Fahrenheit
How to Convert Kelvin to Celsius