Convert US Fluid Ounce (fl oz) to US Liquid Gallons (gal) | fl oz in gal

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Let's convert US Fluid Ounce (fl oz) to US Liquid Gallons (gal)

This quick and easy calculator will convert US Fluid Ounce (fl oz) to US Liquid Gallons (gal) and show formula, brief history on the units and quick maths for the conversion.

Enter US Fluid Ounce to convert to US Liquid Gallons


Quick Reference for Converting US Fluid Ounce to US Liquid Gallons

Formula
gal = fl oz / 128
Quick Rough Maths
To get the US Liquid Gallons, divide the number of US Fluid Ounce by 128.0
US Fluid Ounce (fl oz) in 1 US Liquid Gallon
There are 128 US Fluid Ounce in 1 US Liquid Gallon
US Liquid Gallons (gal) in 1 Fluid Ounce
There are 0.01 US Liquid Gallons in 1 Fluid Ounce

Unit Information

Fluid Ounce
/ˈfluːɪd aʊns/
Symbol: fl oz
Unit System: US Customary

What is the Fluid Ounce?

The US fluid ounce is a unit of volume in the US customary unit system with the symbol fl oz.

Primarily used for measuring the volume or capacity of liquids, 1 US fluid ounce is equal to 29.57353 ml. It is also equal to 1.040843 imperial fluid ounces.

1 US fluid ounce is equal to 1/16 imperial pint, 1/32 imperial quart and 1/128 imperial gallon.

The fluid ounce was originally defined by the volume taken up by one ounce of a substance. Of course this would be different depending on the density of that substance; for example England used wine whereas Scotland used water to establish this measure.

The US fluid ounce is derived from the US gallon; which was originally based on the English wine gallon (231 cubic inches).

US Liquid Gallon
/ˈlɪkwɪdˈɡalən/
Symbol: gal
Unit System: US Customary

What is the US Liquid Gallon?

The liquid gallon is a unit of volume in the US customary unit system and uses the symbol gal.

It is the most common use of the word gallon and is defined as 231 in³. It is made up of 4 quarts where there are 2 pints in a quart and 16 US fluid ounces in a US pint. There are therefore 128 US fluid ounces in a US gallon.

The term gallon is most prevalent when discussing and trading oil and fuel. To ensure consistency, the temperature of the liquid (typically petroleum or alcohol) is understood to be 15.6 °C (60 °F) at the time of measurement.


Conversion Tables for US Fluid Ounce (fl oz) to US Liquid Gallons (gal)