# how to find 3/8 cup of water on measuring cup?

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• That all depends on the level of precision in your measuring cup.  There will always be uncertainty, so at a certain point, it's just best to guess.

However, we can use some indirect methods to find 3/8 of a cup of water.

There are 16 cups to a gallon

There are 128 fluid ounces to a gallon

Therefore, there are 8 ounces to a cup.

3/8 of a cup is 3 fluid ounces of water and is 3/128 of a gallon.

There are 231 cubic inches to a gallon

1 inch = 2.54 cm, exactly

1 cubic cm of water has a mass of 1 gram

1 cubic inch of water has a mass of 2.54^3 grams

(3/128) * 231 * 2.54^3 grams = mass of 3/8 of a cup of water.

Placing the cup on a kitchen scale, which should be able to measure in grams, you can either zero out the scale and add the ‭‭88.7205886875‬ grams of water.

If your scale can measure to the tenth of a gram, you can add 88.7 grams.  You'll be a little bit off, but not by much.

Or

You could just eyeball it.  For most applications, you don't need to be that precise with the amount of water you use in the kitchen.

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• It's right in between the 1/4 and 1/2 markings!

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