Gallons to fluid ounces table
| US liquid gallons | US fluid ounces |
|---|---|
| 1 gal | 128 fl oz |
| 2 gal | 256 fl oz |
| 3 gal | 384 fl oz |
| 4 gal | 512 fl oz |
| 5 gal | 640 fl oz |
| 10 gal | 1,280 fl oz |
| 20 gal | 2,560 fl oz |
| 25 gal | 3,200 fl oz |
| 50 gal | 6,400 fl oz |
| 75 gal | 9,600 fl oz |
| 100 gal | 12,800 fl oz |
1 US liquid gallon in other units
| liters (L) | 3.78541 |
|---|---|
| milliliters (mL) | 3785.41 |
| cubic meters (m³) | 0.00378541 |
| cubic centimeters (cm³) | 3785.41 |
| cubic inches (in³) | 231 |
| cubic feet (ft³) | 0.133681 |
| Imperial gallons | 0.832674 |
| US liquid quarts | 4 |
| US liquid pints | 8 |
| US fluid ounces | 128 |
How the value is converted
1 US liquid gallon × 128 = 128 US fluid ounces
US liquid and Imperial gallons are separate choices. This does not convert US dry gallons or fluid volume to mass.
The first answer is rounded to two decimal places for results of 1 or more, or three significant digits below 1; the exact figure keeps 10 significant digits. Why rounding early changes the answer.