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Is it likely cheaper to use a space heater than full central heating if you literally dont even use much of the space in the house that you never like go anyway? (lemmy.world)

submitted 1 year ago by cheese_greater@lemmy.world to c/asklemmy@lemmy.ml

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[–] cheese_greater@lemmy.world 2 points 1 year ago (1 children)

Is there a quick+dirty F -> C conversion? I know its something something * 0 + 32 or some shit but I'd love a super loose rule or affirmation of that if you know

[–] TauZero@mander.xyz 3 points 1 year ago (1 children)

The full formula is (F-32)*(5/9).

I have difficulty multiplying by 5/9 in my head, so the quick-and-dirty option is to subtract 32 and simply divide by 2.

50F - 32 = 18, divide by 2 = 9C (compare to actual value: 10C)

[–] cheese_greater@lemmy.world 2 points 1 year ago

Very good :)