sizeandspec

How many ounces in a cup?

There are 8 US fluid ounces in one US cup.

US cups to US fluid ounces
cupfl oz
0.252
0.3332.667
0.54
0.6675.333
0.756
18
216
324
432

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What to know

These are U.S. customary measures. A UK pint is 20 UK fluid ounces (568 ml) rather than 16 U.S. fluid ounces (473 ml), so British recipes need their own conversion.

Questions people ask

How many ounces in a cup?

8 US fluid ounces.

Related sizes

Sources and method

Imperial and metric values are converted with 1 in = 25.4 mm exactly and rounded only for display. Found a mistake? Report it and we will correct the page.