ACCURATE CONVERSION
US fluid ounces to US gallons Converter
Convert US fluid ounces (fl oz) to US gallons (gal) with a standards-based formula.
From
To
How to convert US fluid ounces to US gallons
Enter a value in the converter above. The result updates immediately using the relationship below.
FORMULA1 US fluid ounce = 0.0078125 US gallons
US fluid ounces to US gallons conversion table
| US fluid ounces (fl oz) | US gallons (gal) |
|---|---|
| 1 | 0.0078125 |
| 5 | 0.0390625 |
| 10 | 0.078125 |
| 20 | 0.15625 |
| 50 | 0.390625 |
| 100 | 0.78125 |
Common values
For a quick estimate, multiply by the factor above. Use more decimal places when technical work requires additional precision.
Frequently asked questions
How many US gallons are in one US fluid ounce?
One US fluid ounce equals 0.0078125 US gallons.
How do you convert US fluid ounces to US gallons?
Multiply the US fluid ounce value by 0.0078125.
Can I convert US gallons back to US fluid ounces?
Yes. One US gallon equals 128 US fluid ounces; you can also use the swap button.