Celsius to Fahrenheit  [ Works for cold and hot ]


Double the Celsius temperature minus (1/10 of that result) + 32



Boiling point of water   = 100C 

2x100=200-20=180 + 32= 212F

(Google it)
 

What's the freezing point of water??

0C
0C x 2 = 0 + 32 = 32F

(Google it)
 

Forty below is forty below


-40C x2= -80 - -8 (+8) = -72 +32 = -40F

I'll let you Google that one yourself.

If you Google Celsius Fahrenheit Conversion, just about all use the formula

C x (9/5) + 32 = F

Well, this is a more User Friendly form of the 9/5

9/5 = 1.8

I use 2 (doubling) minus 10% or .2

2 - .2 = 1.8   Whoa!  it's the same formula.  Just a LOT easier to use.

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