🧪 Volume & Capacity

Convert US fluid ounces to US gallons

1 fl oz = 0.0078125 gal. Convert US fluid ounces to US gallons instantly with the converter below.

Value

Result —

How to convert

Divide the value (fl oz) by 128 to get gal — example: 5 fl oz = 0.0390625 gal

Conversion table

US fluid ounces to US gallons conversion table
US fluid ounce	US gallon
1 fl oz	0.0078125 gal
2 fl oz	0.015625 gal
3 fl oz	0.0234375 gal
4 fl oz	0.03125 gal
5 fl oz	0.0390625 gal
10 fl oz	0.078125 gal
20 fl oz	0.15625 gal
25 fl oz	0.195313 gal
50 fl oz	0.390625 gal
100 fl oz	0.78125 gal
250 fl oz	1.953125 gal
500 fl oz	3.90625 gal
1,000 fl oz	7.8125 gal

About the units

US fluid ounce — symbol fl oz.
US gallon — symbol gal.

The gallon here is the US gallon (3.785 L); the UK gallon is 4.546 L.

Frequently asked questions

How many US gallons are in 1 US fluid ounce?

1 fl oz = 0.0078125 gal.

How do I convert US fluid ounces to US gallons?

Divide the value (fl oz) by 128 to get gal.

How many US fluid ounces are in 1 US gallon?

1 gal = 128 fl oz.

Which definition does this conversion use?

The gallon here is the US gallon (3.785 L); the UK gallon is 4.546 L.

Related conversions

Reverse: US gallons to US fluid ounces

US fluid ounces to other units

US fluid ounces to milliliters US fluid ounces to liters US fluid ounces to cubic meters US fluid ounces to UK gallons US fluid ounces to US cups US fluid ounces to tablespoons US fluid ounces to teaspoons

Other units to US gallons

milliliters to US gallons liters to US gallons cubic meters to US gallons UK gallons to US gallons US cups to US gallons tablespoons to US gallons teaspoons to US gallons

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