How many ounces in 1 cups? The answer is 8. We assume you are converting between ounce [US, liquid] and cup [US]. You can view more details on each measurement unit: ounces or cups The SI derived unit for volume is the cubic meter. 1 cubic meter is equal to 33814.022558919 ounces, or 4226.7528198649 cups. Note that rounding errors may occur, so always check the results. Use this page to learn how to convert between ounces and cups. Type in your own numbers in the form to convert the units! âºâº Want other units? You can do the reverse unit conversion from cups to ounces, or enter any two units below: