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HI,

wHEN IT SAYS "1 CUP" WHAT IS THIS IN GRAMS?

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This is why I converted all my recipes to grams. It makes life much easier. – Carl_Stawicki Aug 23 at 10:40
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you're comparing volume (cups) to weight (grams). like apples to oranges. – Renee Aug 23 at 11:02

6 Answers

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As borofergie said, the answer to this actually depends on what you are measuring. For example:

  • 1 cup of water is 236 grams.

  • 1 cup of wheat flour (ewww) is about 130 grams.

  • 1 cup of butter (yum!) is 227 grams.

  • 1 cup of mercury (y'know, for all those recipes that call for mercury) is about 3200 grams.

So it varies. What will be filling your cup?

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So how'd you know about the wheat thing then? All sounds very suspicious to me. – borofergie Aug 23 at 8:18
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Depends on what is in the cup. 1 cup of feathers weighs a little less than a cup of uranium.

By the power of google: http://allrecipes.com/howto/cup-to-gram-conversions/

Why do American recipes do that? A cup is a measure of volume, not of weight, and not even a consistent one at that. I have big cups and small cups in my house. I'm thinking of buying y'all a set of kitchen scales for Christmas.

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The American cup is a consistent measure. You can buy sets of 'cups' for baking. You can get plain stainless steel ones but I got these for christmas - amazon.co.uk/Fred-Cup-Measuring-Matroyshkas-Cups/… – Jean Aug 23 at 8:19
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borofergie, a cup is a standard measure. It's the volume that is equivalent to 1/2 lb of water. Everyone in the US has a cup measure in their home. Almost no one has a scale. – CD Aug 23 at 12:24
...and maybe we just solved the whole American obesity epidemic just there. You've been adding too many ingredients to your food people. When do I pick up my Nobel prize? – borofergie Aug 23 at 17:58
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a cup is a measure of the liquid volume that would contain 1/2 pound of water (approx 236g water). Density of liquid would change how much weight would fit into the same volume. Also with non-liquids the use of a cup becomes silly.

American recipes use this because it has become a standard measure and ever household has one of these
.

A scale, on the other hand, very few people actually have (which I have never understood).

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I love my scale and use it a lot, but, yes, I grew up in the US using cups. And as everyone has said, it depends on what you're weighing.

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Weight (grams) is different than volume (cups). But here are some useful conversions:

1 teaspoon = 5 ml

1 cup = 240 ml

1 oz = 30 gm (in weight)

1 lb = 454 gm (in weight)

If you know how many teaspoons are in a tablespoon are in a cup, and so on, then if you have a calculator you can figure out any other calculations you need.

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This only works for water, which has a density of 1. – deirdra Aug 23 at 16:51
It's close enough for most liquids and this is what we used when measuring volume in the pharmacy. Not necessary to be exact. – MiMintzer Aug 23 at 17:22
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This reminds me of...

If a rooster was to lay an egg on top of a roof. Which direction will the egg fall?

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