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# OZ to Gallon Calculator

You can use oz to gallon calculator below or do the calculation by your self with the conversion factor .

The conversion of the fluid Oz to gallon differ from the British imperial system and the US :

• 1 Ounce [Liquid OZ, US Customary Units] = 0.0078125 (1/128) Gallon [liquid, US Customary Units].
• 1 Ounce [Liquid OZ, UK British Imperial System] = 0.00625 (1/160) Gallon [liquid, UK British Imperial System].

A fluid Ounce (OZ) is unit of volume also called capacity is almost equal to 28.4130625 millilitres (28ml) in the British imperial system. Therefore a fluid ounce (OZ) is consequently equal to 29.5735295625 milliliters (30ml) in the US Customary Units.

Note: Most of all the US regulation defines the liquid ounce as exactly 30 milliliters as per 21 CFR 101.9 but this is for the labeling only.

## Examples:

### oz to gallon calculator the US Customary Units example:

Task 1: Convert 64 US fluid ounces to US gallons.

Equation:

fl OZ / 128= gallon.

Calculation:

64 fl OZ / 128= 0.5 gallon.

Result:

64 US fl oz is equivalent to 0.5 gallon.

### oz to gallon calculator the British imperial system example:

Task 2: Convert 64 British imperial system.

Equation :

fl OZ /160= gallon.

Calculation :

64 fl OZ / 160= 0.4 gallon.

Result :
64 US fl oz is equivalent to 0.4 gallon.