How many cups in a gallon?
There are 16 cups in 1 US gallon, so half a gallon is 8 cups and a quarter gallon (one quart) is 4.
A gallon is also 4 quarts, 8 pints, 128 fluid ounces or 3.79 liters. Gallons mostly show up in big-batch cooking: brines, iced tea, lemonade and stock.
Converter
| Gallons | Cups | Quarts | Fluid ounces | Liters |
|---|---|---|---|---|
| ¼ gallon | 4 | 1 | 32 | 0.95 L |
| ½ gallon | 8 | 2 | 64 | 1.89 L |
| ¾ gallon | 12 | 3 | 96 | 2.84 L |
| 1 gallon | 16 | 4 | 128 | 3.79 L |
| 1½ gallons | 24 | 6 | 192 | 5.68 L |
| 2 gallons | 32 | 8 | 256 | 7.57 L |
Calculated from the exact unit definitions (1 US cup = 236.5882365 ml, 1 oz = 28.349523125 g) and rounded for the kitchen.
US gallons and UK gallons
The imperial gallon used in the UK is 4.55 liters, 1.2 times a US gallon, or about 19.2 US cups. British recipes almost never use gallons now, but older ones and home-brewing guides do.
How heavy is a gallon?
A US gallon of water weighs about 8.3 pounds (3.79 kg). Worth knowing before you fill a stockpot on the stove and try to carry it to the sink.
Measuring a gallon without counting to 16
Counting sixteen cups invites a miscount. Use a 4-cup (1-quart) measuring jug four times instead, or measure a gallon of water into your biggest pot once and scratch or note the level for next time. For smaller amounts, see cups in a quart.
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How many cups are in half a gallon?
8 cups. A half-gallon carton of milk holds 8 cups.
How many ounces are in a gallon?
128 US fluid ounces. An imperial gallon is 160 imperial fluid ounces.
How many 16.9 oz water bottles make a gallon?
About 7½. A gallon is 128 fluid ounces, and 128 ÷ 16.9 = 7.57.
How many liters are in a gallon?
3.785 liters in a US gallon and 4.546 in a UK gallon.