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

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

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

Enter Imperial Gallons to convert to US Fluid Ounce


Quick Reference for Converting Imperial Gallons to US Fluid Ounce

Formula
fl oz = gal x 153.72
Quick Rough Maths
To get the US Fluid Ounce, multiply the number of Imperial Gallons by 153.7
Imperial Gallons (gal) in 1 Fluid Ounce
There are 0.01 Imperial Gallons in 1 Fluid Ounce
US Fluid Ounce (fl oz) in 1 Imperial Gallon
There are 153.72 US Fluid Ounce in 1 Imperial Gallon

Unit Information

Imperial Gallon
/ˈɡalən/
Symbol: gal
Unit System: Imperial

What is the Imperial Gallon?

The gallon is a unit of volume in the imperial unit system with the symbol gal.

1 British imperial gallon is defined as 4.54609 litres or 277.4194 in³.

The term gallon derives directly from the Old Northern French term 'galun' which means 'liquid measure'. The origin of the word prior to this is still unknown. It originated as the base of the system for measuring wine and beer in the UK and has now been adopted across the world and there are similar versions in the US and associated states (although they measure slightly differently).

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).


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