To determine how many 16 oz bottles are in a gallon, we first need to know how many ounces are in a gallon. There are 128 ounces in a gallon. Next, we divide the total ounces in a gallon by the size of the bottle.
So, we take 128 ounces and divide it by 16 ounces:
128 oz ÷ 16 oz = 8
This means that it takes 8 bottles of 16 oz water to equal 1 gallon. Therefore, if you’re drinking from 16 oz bottles, you would need to drink 8 of them to reach a full gallon.