Cup    1      is equal to             Fluid Ounce           8

The question of how many fluid ounces in a cup is a good one to ask. A traditional measuring cup has 8 fluid ounces. That is divided into two 4 ounce measurements. So, a cup would be equivalent to 16 fluid ounces. Additionally, the American weight-based system uses a cup as a unit of measure for volume instead of weight