# Gallons to Ounces Conversion

## How many ounces in a gallon?

Gallons to ounces (oz) conversion factors are listed below. To find out how many ounces in gallons, multiply the number of gallons by the conversion factor or use the converter.

1 Gallon [Fluid, US] = 128 Ounces [Fluid, US]
1 Gallon [Dry, US] = 148.946 Ounces [Fluid, US]
1 Gallon [UK] = 160 Ounces [UK]

There are 128 ounces in a gallon, because from the largest to the smallest units between gallons and ounces, there are 4 quarts in a gallon, 2 pints in a quart, 2 cups in a pint and 8 ounces in a cup, that makes 4 * 2 * 2 * 8 = 128 ounces in a gallon.

Gallon is a US customary and imperial volume unit. US fluid gallon is defined to be 231 cubic inches and US dry gallon is 268.8025 cubic inches. An imperial galon is 277.4 cubic inches. The abbreviation is "gal".

Fluid ounce is an imperial and US customary volume unit. 1 US fluid ounce equals to 29.5 mL and imperial ounce equals to 28.4 mL. The abbreviation is "fl oz".

Converter

Enter a US gallon value to convert into fluid ounces and click on the "convert" button.

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## Gallons to Ounces Conversion Table [Fluid, US]

GallonFl. OunceGallonFl. OunceGallonFl. OunceGallonFl. Ounce
1128263328516528769728
2256273456526656779856
3384283584536784789984
45122937125469127910112
56403038405570408010240
67683139685671688110368
78963240965772968210496
810243342245874248310624
911523443525975528410752
1012803544806076808510880
1114083646086178088611008
1215363747366279368711136
1316643848646380648811264
1417923949926481928911392
1519204051206583209011520
16204841524866844810012800
17217642537667857612516000
18230443550468870415019200
19243244563269883217522400
20256045576070896020025600
21268846588871908825032000
22281647601672921630038400
23294448614473934450064000
24307249627274947275096000
2532005064007596001000128000