How Many Ounces In a Cup

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The kitchen measure

One US cup is 8 fluid ounces. A fluid ounce is volume, not the weight ounce on a scale. These are US cooking measures. A US cup is 236.6 milliliters, not the 250 milliliter metric cup some recipes use.

Four measuring cups marked 1 cup, 3/4 cup, 1/2 cup, and 1/4 cup, with 8, 6, 4, and 2 fluid ounces. — One cup, three quarters, one half, and one quarter, with the fluid ounces written above each cup.

How to check it

A tablespoon is 3 teaspoons, and a cup is 16 tablespoons. If you are converting a fraction of a cup, multiply 16 tablespoons by that fraction, then multiply teaspoons by 3. The Calculate button uses the same cup of 8 fluid ounces.

The same amount on the full converter is cups to fluid ounces. Scaling every ingredient in the recipe uses the recipe scale, and the spoon-to-cup table lives on the cooking conversion calculator. A nearby kitchen measure is tablespoons in 2/3 cup.