2.64 oz. 1 cup = 8 ounces. 1 ounce = 0.12 cup.
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Because ounces and cups are both standard systems of measurement, they convert evenly. Therefore, there are exactly 8 U.S. fluid ounces in one cup.
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There are 2.6667 ounces in 1/3 of a cup.
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1. Divide the number of fluid ounces by 8 to convert the amount to cups. If you have 24 fluid ounces, 24 divided by 8 equals 3 cups. To go in the other direction, cups to fluid ounces
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