1 fluid ounce equal 30 mL (US food labelling fluid ounce).
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70 fluid oz X 1 cup/8 fluid oz = 8 3/4 cups
There are 8 fluid ounces in 1 cup.
One cup is bigger than 8 oz. One cup is equal to 8 fluid ounces, so when you have a cup of a liquid, you have 8 oz.
One cup is equal to 8 fluid ounces, not 16 fluid ounces. This can sometimes be confusing because there are different measurements for a cup depending on the context – for example, a US customary cup is 8 fluid ounces, while a metric cup is 250 milliliters (which is about 8.45 fluid ounces).
8 fluid ounces equal 1 cup, so 9 fluid ounces is slightly more than 1 cup.