What is colder, -40 C. or -40 F.?

Question

What is colder, -40 C. or -40 F.?

Question #107717. Asked by storky1.

CellarDoor

Answer has 10 votes

Currently Best Answer

CellarDoor

Moderator
25 year member
66 replies avatar

Answer has 10 votes.

Currently voted the best answer.

They are equally cold. It is at -40 that the two scales give the same reading. "The Fahrenheit and Celsius scales converge at −40 degrees (i.e. −40 °F and −40 °C represent the same temperature)."

https://en.wikipedia.org/wiki/Fahrenheit

Aug 05 2009, 8:16 PM

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Answer 1

ghosttowner

Answer has 5 votes

ghosttowner

18 year member
101 replies avatar

Answer has 5 votes.

They are both the same. It is the only temperature where both are equal.

http://www.escapeartist.com/Temperature_Conversion/Temperature_Conversion.html

Aug 05 2009, 8:17 PM

Answer 2

mctavish99
Answer has 4 votes

mctavish99
19 year member
511 replies avatar

Answer has 4 votes.

http://www.albireo.ch/temperatureconverter/formula.htm

C = (F - 32) x 5/9
F = C x 9/5 +32

Convert -40F to C
C = (-40 - 32) x 5/9 = -72 x 5/9 = -40
Convert -40C to F
F = -40 x 9/5 + 32 = -72 + 32 = -40

Aug 06 2009, 5:04 AM