zyrax

I HATE having to convert Fahrenheit to Celsius.Especially when reading recipes.Even if you remember the formula,you still have to pull out a calculator(unless your a walking calculator).

I spend some time trying to find a best way( it must have lowest margin of error and ease to calculate ) to estimate Fahrenheit to Celsius as simple as possible.

My Quick Formula For Fahrenheit to Celsius Estimation
[ (F/2) - 16 ]+10%
where F is a variable in °F

Example:
102°F : 102/2=51-16=35+10%=38.5
102 degrees Fahrenheit = 38.8888889 degrees Celsius

76°F : 76/2=38-16=22+10%=24.2
76 degrees Fahrenheit = 24.4444444 degrees Celsius

32°F : 32/2=16-16=0*1.1=0

4°F : 4/2=2-16=-14+10%=-15.4
4 degrees Fahrenheit = -15.5555556 degrees Celsius

0°F : 0/2=0-16=-16+10%=-17.6
0 degrees Fahrenheit = -17.7777778 degrees Celsius