# Convert to Celsius 21f 21f
This is the conversion formula for Fahrenheit to Celsius, where TF is temperature in Fahrenheit and TC is temperature in Celsius.
TC=59⋅(TF-32)
Substitute the Fahrenheit temperature into the formula.
TF=59⋅(21-32)
Subtract 32 from 21.
Tc=59⋅-11
Multiply 59⋅-11.
Combine 59 and -11.
Tc=5⋅-119
Multiply 5 by -11.
Tc=-559
Tc=-559
Move the negative in front of the fraction.
Tc=-559
Convert the fraction to a decimal by dividing the numerator by the denominator.
Tc=-6.1‾
Convert to Celsius 21f

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