Other contributors have said "How do you change Celsius into Fahrenheit?" is the same question as "What is the conversion formula from Celsius to Fahrenheit and vice versa?"

What is the conversion formula from Celsius to Fahrenheit and vice versa?

Answer:

Converting Fahrenheit and Celsius


To convert from Fahrenheit to Celsius:

C° = (F° - 32)/9 x 5
  • Begin by subtracting 32 from the Fahrenheit number.
  • Divide the answer by 9.
  • Then multiply that answer by 5.


OR skip a step...

C° = (F° - 32) x (5 / 9)
  • Begin by subtracting 32 from the Fahrenheit number.
  • Divide 5 by 9.
  • Then multiply that answer to first number



Since 5/9 will always be 0.5555555 you can just skip the second step and multiply the first number to it.
For example:
C° = (F° - 32) x 0.555555

*(Where [F-32] is evenly divisable by 9, this will spoil the integer result.)

To convert from Celsius to Fahrenheit:
F° = (C° x 9/5) +32
  • Begin by multiplying the Celsius temperature by 9.
  • Divide the answer by 5.
  • Now add 32.

Or, as above, you can use the decimal 1.8 instead of 9/5
F° = (C° x 1.8) +32
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First answer by Dfoofnik. Last edit by Dfoofnik. Contributor trust: 2550 [recommend contributor recommended]. Question popularity: 17 [recommend question].
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