In the United States, two ounces is the same as 1/4 cup. The U.S. way of measuring is that 1 cup is equal to 8 ounces.
To get the number of cups from the number of fluid ounces, just multiply the number of ounces by 0.125. To get the number of fluid ounces from the number of cups, multiply the number of cups by 8.
The fluid ounce is a volume unit that can be written as “fl oz.” People often mix up the fluid ounce with the ounce, which is a unit of mass. The cup is a volume unit that is written as “c.” Most of the time, the cup is used in the kitchen to measure liquids or dry foods.