What is ½ cup to the ounce? ½ the U.S. cup equals 4 fluid ounces. It is the first requirement of the measurements that you remember the units. Like in any recipe, you do not say that it requires 4 salts. Instead, put it like it required 4 tablespoons of teaspoons of salt. Your understanding of the units should be clear, and also, you should know which system is better to be followed.
What is a fluid ounce:
A fluid ounce (abbreviated fl oz, fl. oz., or oz. fl). Although several definitions have been used throughout history. The British Imperial and the United States customary fluid ounce are the only two that are still in general use.
An imperial fluid ounce is equal to 120 percent of an imperial pint, 160 percent of an imperial gallon, or 28.41 milliliters.
US fluid ounce is exactly 29.5735295625 mL or 1/16 of a US liquid pint and 1/128 of a US liquid gallon.