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Convert fluid Ounce (US) to gallon (US)

Facts about the Fluid Ounce (US)

The U.S. fluid ounce is a volume unit used for smaller quantities of liquid, defined as 1/128 of a U.S. gallon or approximately 29.5735 mL.

Evolved from the British apothecaries’ ounce, the U.S. fluid ounce is smaller than the U.K. version (28.413 mL). It became standardized in 1959 as part of the American Weights and Measures system.

Used for beverages (soda cans, energy drinks), food recipes, cosmetic containers, and medical syringes.

1 fl oz = 29.5735 mL = 0.0625 pt

Conversion Table

FromToValue
1 fl ozmL29.5735
1 fl ozpt0.0625
1 fl ozL0.0295735

Facts about the Gallon (US)

The U.S. gallon is a unit of volume in the U.S. customary system, defined as exactly 3.78541 liters.

The U.S. gallon was derived from the British wine gallon but diverged in 1824 when the UK adopted the imperial gallon. The U.S. gallon remains smaller than the imperial version (4.54609 L).

Used in the U.S. for fuel (e.g., gasoline), milk, and other large liquid containers. It’s also used in agriculture and food production.

1 gal (US) = 3.78541 L = 128 fl oz = 8 pt (US)

Conversion Table

FromToValue
1 galL3.78541
1 galfl oz128
1 galpt8