Use an online calculator, such as those at CalculateMe.com and GoodCooking.com, to easily convert dry ounces to cups. Other options include referring to a measurement equivalency chart or doing a manual math calculation in which 1 ounce equals 0.125 cups.
CalculateMe.com has an online volume conversion calculator that quickly converts measurements between cups, gallons, liters, ounces, pints, quarts, tablespoons and more. GoodCooking.com has a basic measurement calculator in addition to liquid and dry measurement equivalency charts for quick reference. To convert the measurements by making a manual math calculation, multiply the number of dry ounces by 0.125 to get the equivalency in cups.