How many ounces in a gallon?
Answer
128 US fluid ounces
1 US gallon = 128 US fluid ounces (gal → fl oz)
A US gallon holds 128 US fluid ounces: 4 quarts × 2 pints × 2 cups × 8 fl oz.
An imperial (UK) gallon holds 160 imperial fluid ounces, which is about 153.7 US fluid ounces.
US Gallons to US fluid ounces
| US Gallons | US Fluid Ounces |
|---|---|
| ¼ | 32 |
| ½ | 64 |
| ¾ | 96 |
| 1 | 128 |
| 1½ | 192 |
| 2 | 256 |
| 3 | 384 |
| 4 | 512 |
| 5 | 640 |
| 10 | 1,280 |
| 20 | 2,560 |
| 50 | 6,400 |
| 100 | 12,800 |
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Gallons to oz Converter (US Gallons to US Fluid Ounces) → · Printable cooking conversion chart →