why is kilocalorie and calorie used interchangeably?

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From what I understand, kilo is used for a 1000 units of something. Like kilometer is 1000 meters, kilogram is 1000 gram and so on. But when it comes to the food we consume, when we say coconut water has 18 kilocalorie/100 gm, why does it not mean 18000 calorie in general sense?

In: Physics

10 Answers

Anonymous 0 Comments

There’s the food Calorie and the scientific calorie, both of which are measurements of energy (IIRC, 1 calorie = 4.18 joules). The capital letter is important here. Same as kB is not the same as kb: 1000 kB (kilobytes) is 8 times larger than 1000 kb (kilobits)

1 Cal -> 1000 cal -> 1 kcal
1 B -> 8 b

Although the confusion is more than understandable given that there are zero character difference between Calorie and calorie, while for B (byte) and b (bit) at least the two words behind those abbreviations are different

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