Fluid Ounces to Gallons
1 US fluid ounce = 0.0078125 gallons
Converter Calculator
1 Fluid Ounces = 0.007813 Gallons
Explanation
Divide fluid ounces by 128 because one US gallon equals 128 US fluid ounces, keeping the volume definitions aligned.
Use the calculator whenever you need to translate between fluid ounces and gallons for pours, menus, or inventory.
Common Conversion Values
| Fluid Ounces | Gallons |
|---|---|
| 1 | 0.007813 |
| 2 | 0.015625 |
| 4 | 0.03125 |
| 8 | 0.0625 |
| 16 | 0.125 |
| 32 | 0.25 |
| 64 | 0.5 |
| 128 | 1 |
How to use this hub
- Choose a converter family.
- If converting to/from grams from a volume unit, select an ingredient.
- For pure unit changes (volume↔volume or weight↔weight), use universal conversions.
If your conversion includes grams, you’ll choose an ingredient; otherwise you won’t.
Frequently Asked Questions
Which unit definitions are used?
It relies on the US customary Fluid Ounces and Gallons definitions so every result matches the Beverage volume standard.
When should I use this page?
Use it whenever you know fluid ounces and want the matching gallons pouring total.