Fluid Ounce to Gallon Converter
Convert fluid ounce to gallon instantly.
Standard volume units
liter 2.957
milliliter 2957.353
cup 12.5
gallon 0.7813
pint 6.25
Fun comparisons
espresso shots ☕~ 98.58
standard water bottles 🍶~ 5.91
bathtubs 🛁~ 0.02
Olympic swimming pools 🏊~ Less than 0.01
How to convert fluid ounce to gallon
Enter your value in fluid ounce and see the equivalent in gallon instantly. The converter includes real-world comparisons - like water bottles and bathtubs - to help you picture the volume.
Fluid ounces are used for small US beverage and cooking measurements; gallons are used for large liquid volumes like fuel and juice containers.
Need the opposite direction? Convert gallon to fluid ounce just as easily, or explore all our volume conversions.
Common fluid ounce to gallon conversions
| Fluid Ounce (fl oz) | Gallon (gal) |
|---|---|
| 1 | 0.0078125 |
| 5 | 0.0390625 |
| 10 | 0.078125 |
| 25 | 0.195313 |
| 50 | 0.390625 |
| 100 | 0.78125 |
| 500 | 3.90625 |
| 1000 | 7.8125 |
Frequently asked questions
1 fluid ounce equals 0.0078125 gallon.
Multiply by 0.0078125. For example, 5 fl oz = 0.0390625 gal.
64 fluid ounces equals exactly 0.5 gallons - a half gallon.
1 gallon equals 128 fluid ounce.
100 fluid ounce equals 0.78125 gallon.