What is 2/3 cup in ounces?

There are 5 1/3 ounces in 2/3 of a cup. One cup is the equivalent of 8 ounces, and 2/3 of 8 is 5 1/3.

Because 1 tablespoon equals 1/2 ounce, 5 1/3 tablespoons equal 1/3 of a cup. This also means that 10 2/3 tablespoons equal 2/3 of a cup. Since there are 3 teaspoons in 1 tablespoon, 2/3 of a cup contains 32 teaspoons and because 2 cups equal 1 pint, 2/3 of a cup is the equivalent of 1/3 of a pint. The measurement of 2/3 cup is also equal to 1/6 of a quart and 1/24 of a gallon.