There are two ways to approach this, depending on what type of ounces you're asking about:

* Fluid ounces: 3/4 cup is equal to 6 fluid ounces. This is the most common measurement used for liquids.

* Weight ounces: 3/4 cup of water is equal to approximately 6 weight ounces. However, the weight of 3/4 cup will vary depending on the density of the substance being measured.

So, to be clear, you need to specify whether you're asking about fluid ounces or weight ounces.