What is -20 degrees Fahrenheit in Celsius?

How many degrees Celsius in -20 degrees Fahrenheit?

Type into the calculator to convert between Celsius and Fahrenheit. This calc is prefilled to convert -20 FtoC. The formula to convert Celsius to Fahrenheit is to take degrees in Celsius, multiply by 1.8, and add 32. One trick I use is to remember some key numbers. Take a look at the table below.
CelsiusFahrenheit
0 C32 F
5 C41 F
10 C50 F
15 C59 F
20 C68 F
25 C77 F
30 C86 F
Fahrenheit to Celsius
How hot? How cold? What is -20 Fahrenheit in Celsius?
FahrenheitCelsius
-19.9-28.833333333333
-19.8-28.777777777778
-19.7-28.722222222222
-19.6-28.666666666667
-19.5-28.611111111111
-19.4-28.555555555556
-19.3-28.5
-19.2-28.444444444444
-19.1-28.388888888889
FahrenheitCelsius
-19-28.333333333333
-18-27.777777777778
-17-27.222222222222
-16-26.666666666667
-15-26.111111111111
-14-25.555555555556
-13-25
-12-24.444444444444
-11-23.888888888889
-10-23.333333333333
FahrenheitCelsius
-30-34.444444444444
-25-31.666666666667
-20-28.888888888889
-15-26.111111111111
-10-23.333333333333
-5-20.555555555556
0-17.777777777778
5-15
10-12.222222222222
15-9.4444444444444
20-6.6666666666667
25-3.8888888888889
30-1.1111111111111
351.6666666666667
404.4444444444444
457.2222222222222
FahrenheitCelsius
5010
5512.777777777778
6015.555555555556
6518.333333333333
7021.111111111111
7523.888888888889
8026.666666666667
8529.444444444444
9032.222222222222
9535
10037.777777777778
10540.555555555556
11043.333333333333
11546.111111111111
12048.888888888889