Fluid ounces (US) to Gallons (US – Liquid) converter

To convert fluid ounces (US) to gallons (US – Liquid), enter the value in the first field. The result in gallons (US – Liquid) is calculated automatically using the exact conversion factor.

1 US fl oz = 0.0078125 US gal
1 US gal = 128 US fl oz

Formula: US gal = US fl oz × 0.0078125
US fl oz = US gal × 128

Definitions: 1 US fl oz = 1/128 US gal; 1 US gal = 231 in³

The US fluid ounce is 1/128 of a US gallon. It is the volume unit printed on American drink bottles, cans and nutrition labels, and it is not the same thing as the ounce of weight.

The US liquid gallon is the everyday gallon in the United States, used for fuel, milk, paint and most liquids sold by volume. It derives from the old English wine gallon, which was fixed at 231 cubic inches.

See the conversion table with commonly used values, handy for quick reference or study.