Convert us fluid ounces to us gallons instantly.
Definition: A US fluid ounce is one 128th of a US gallon, equal to about 29.5735 milliliters.
History/origin: The US fluid ounce came from older English systems and stayed tied to the US gallon after the US and imperial systems diverged.
Current use: US fluid ounces are used on drink cans, nutrition labels, recipes, and personal care products in the United States.
Definition: The US gallon is a customary volume unit. It contains 4 US quarts, 8 US pints, 128 US fluid ounces, or exactly 3.785411784 L.
History/origin: The United States kept a gallon based on earlier English practice, while Britain later standardized a different imperial gallon, creating the modern split.
Current use: US gal is common at gas pumps, in paint cans, water jugs, aquarium sizes, pool chemicals, cleaning products, and many American bulk-liquid labels.
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