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How many water bottles are in a gallon?
A gallon is 128 fluid ounces, so divide 128 by the size of the bottle. The table lists the bottle sizes in the tool above.
| Bottle size | Bottles in 1 gallon (128 fl oz) |
|---|---|
| 8 fl oz | 16.0 |
| 12 fl oz | 10.7 |
| 16.9 fl oz (500 mL) | 7.6 |
| 20 fl oz | 6.4 |
| 24 fl oz | 5.3 |
| 32 fl oz | 4.0 |
| 1 L | 3.8 |
How many ounces are in a gallon of water?
One US gallon is 128 fluid ounces. A half gallon is 64 ounces. The table shows a few amounts in ounces, cups, liters and bottles.
| Gallons | Fluid ounces | Cups | Liters | Bottles (16.9 fl oz) |
|---|---|---|---|---|
| 0.5 | 64 | 8 | 1.9 | 3.8 |
| 1 | 128 | 16 | 3.8 | 7.6 |
| 1.5 | 192 | 24 | 5.7 | 11.4 |
| 2 | 256 | 32 | 7.6 | 15.1 |
How many cups are in a gallon of water?
A US cup is 8 fluid ounces, so a gallon is 16 cups and a half gallon is 8 cups. If you drink from 12 ounce glasses, a gallon is about 10.7 glasses.
For amounts that are not in the table above, use the ounces to cups converter; it also covers dry versus fluid ounces.
Is a gallon of water a day right for me?
A gallon a day is 128 ounces, or about 3.8 liters. Spread over 16 waking hours, that is 8 ounces an hour. The half-your-weight rule of thumb reaches 128 ounces only at 256 pounds, so a gallon is more than the rule gives for most adults. Think of it as a personal target, not a need that fits everyone, and ask your doctor if you are unsure.
Drinking a lot at once is different from sipping through the day: read how much water is too much. To get a number for your own weight, use the water intake calculator.
64 oz of water is how many cups?
64 ounces is 8 cups, because each cup is 8 ounces. It is half a gallon, about 1.9 liters, or about 3.8 bottles of 16.9 ounces.
Frequently asked questions
How many water bottles is a gallon?
A US gallon is 128 ounces, which is about 7.6 bottles of 16.9 ounces (500 mL). It is 10.7 bottles of 12 ounces, 6.4 bottles of 20 ounces, 5.3 bottles of 24 ounces and exactly 4 bottles of 32 ounces. Pick your bottle size in the tool above.
How many ounces are in a gallon of water?
There are 128 fluid ounces in one US gallon of water. A half gallon is 64 ounces. A gallon is also 16 cups, or about 3.8 liters. The tool above turns any number of gallons into ounces, cups, bottles and liters, so you can check a larger or smaller amount.
How many cups are in a gallon of water?
There are 16 US cups in a gallon, because a cup is 8 ounces and a gallon is 128 ounces. A half gallon is 8 cups. If you count in 12 ounce glasses instead, a gallon is about 10.7 glasses. Use the bottle size box above if you drink from a bottle.
How much is a gallon of water a day?
A gallon a day is 128 ounces, or about 3.8 liters, which is 8 ounces in each of 16 waking hours. That is more than the rule of thumb gives for most adults: half your weight reaches 128 ounces only at 256 pounds. Think of it as a personal target and ask your doctor.
64 oz of water is how many cups?
64 ounces of water is 8 cups, because each cup is 8 ounces. It is half a gallon, about 1.9 liters, or about 3.8 bottles of 16.9 ounces. This is the amount behind the popular 8 glasses a day idea, which is a rule of thumb and not a need that fits everyone.