(2/3) US cup = 5.33333333 US fluid ounces
How Many Ounces In 2/3 Cup?
5 & 1/3 ounces = 2/3 cup
There are 8 oz in 1 cup. To find 2/3 of 8 oz, multiply 2/3 by 8/1. 16/3 or 5 1/3 oz.