Water Bottle Math › 8 oz
How Many 8 oz Water Bottles Are in a Gallon?
The quick answer, a chart for every common water goal, and a calculator for yours.
8 oz (a small cup or kids’ bottle)16 bottlesmake one US gallon (128 fl oz) · exactly 16
How many 8 oz bottles for common goals
| Goal | Bottles | In plain words |
|---|---|---|
| a gallon | 16 bottles | exactly 16 |
| half a gallon | 8 bottles | exactly 8 |
| 64 oz | 8 bottles | exactly 8 |
| 100 oz | 12.5 bottles | about 12½ |
| 2 liters | 8.45 bottles | about 8½ |
| 3 liters | 12.68 bottles | about 12¾ |
| 8 cups (8 oz each) | 8 bottles | exactly 8 |
| 120 oz | 15 bottles | exactly 15 |
Your own goal
How the maths works
Divide your goal in fluid ounces by the bottle size. One US gallon is 128 fl oz and one liter is 33.81 fl oz. Round up if you want to be sure you hit the goal.
Questions
How many 8 oz water bottles make a gallon?
16 bottles. A US gallon is 128 fl oz, and 128 ÷ 8 = 16.
How many 8 oz bottles are 64 oz?
8 bottles.
How much water should I drink a day?
It varies with body size, activity, climate and health. The US National Academies suggest about 3.7 liters of total water a day for men and 2.7 for women, including water from food. Your doctor can advise you.