At Starbucks, the Grande cup size is equivalent to a medium-sized drink and holds 16 fluid ounces. It is the standard size for many popular beverages at the coffee chain, including classic options like lattes, cappuccinos, and mochas, as well as specialty drinks like the Starbucks Doubleshot on Ice and the Starbucks Refreshers. The Tall cup size is considered the average small size and holds 12 fluid ounces. Despite the availability of a smaller size called Short, the Tall is the smallest size listed on the standard menu. The largest cup size at Starbucks is a 31-ounce Trenta, which is only available for iced coffee or tea drinks.