How many 10oz glass are in one keg?

The number of 10-ounce glasses in a keg depends on the size of the keg. A standard half-barrel keg, which holds 15.5 gallons, can serve approximately 165 ten-ounce glasses. This is calculated by converting gallons to ounces (15.5 gallons x 128 ounces per gallon) and then dividing by 10 ounces per glass.