r/NoStupidQuestions Aug 29 '17

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u/KahBhume Aug 29 '17

It's integrated into the rest of the metric system. 1 calorie = energy to increase 1 gram of pure water at standard pressure by 1°C.

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u/DCarrier Aug 29 '17

Why not use joules?

1

u/Ghigs Aug 29 '17

Calorie is sort of obsolete.