Gallons to Fluid Ounces Conversion

How many ounces in a gallon?

Gallons to ounces conversion factors are listed below. To find out how many ounces in a gallon, multiply by the conversion factors or use the converter.

1 Gallon [Fluid, US] = 128 Ounces [Fluid, US]
1 Gallon [Dry, US] = 148.94684 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 gallon and fl. oz, there are 4 quarts in a gallon, 2 pints in a quart, 2 cups in a pint and 8 fl. ounces in a cup, that makes 4 * 2 * 2 * 8 = 128 fl. ounces in a gallon.

For example, to find out how many ounces in a gallon and a half, multiply the gallon value by the conversion factor, that makes 1.5 gal * 128 = 192 ounces in a gallon and a half.

For US fluid gallons, there are 128 ounces in a gallon, 64 fl. oz in 1/2 gallon, 32 fl. oz in 1/4 gallon, 16 fl. oz in 1/8 gallon, 42.6 fl. oz in 1/3 gallon and 96 fl. oz in 3/4 gallon.

For UK gallons, there are 160 ounces in an imperial gallon, 80 fl. oz in 1/2 gallon, 40 fl. oz in 1/4 gallon, 20 fl. oz in 1/8 gallon, 53.3 fl. oz in 1/3 gallon and 120 fl. oz in 3/4 gallon.

Gallon is unit of volume in imperial and US customary systems. The US gallon is defined as 231 cubic inches or 8.3389 avoirdupois pounds (3.78 kg) of distilled water at its maximum density and with the barometer at 30 inches. Gallon is the largest volume unit in US customary and imperial measurement systems.

An imperial gallon is officially defined as equal in volume to 10 avoirdupois pounds (4.53 kg) of distilled water weighed at 62 degrees Fahrenheit (16.66 degrees Celsius) with barometer at 30 inches (or equal to 277.421 cubic inches). The imperial gallon is 17% larger than the US gallon. The abbreviation is "gal".

Fluid ounce is an imperial and US customary measurement system volume unit. Fluid ounce is the smallest unit of volume in imperial and US customary systems. UK fluid ounce equals to one twentieth of a pint and US fluid ounce equals to one sixteenth of a US pint. The abbreviation is "fl oz".

If scroll down, you may also create and print your own custom conversion table create your table.

Converter

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

For fl. ounces to gallons converter, go to ounces to gallons

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Conversion Table [Fluid, US]

GallonFl. OunceGallonFl. OunceGallonFl. OunceGallonFl. Ounce
1 gal 128 fl oz 26 gal 3328 fl oz 51 gal 6528 fl oz 76 gal 9728 fl oz
2 gal 256 fl oz 27 gal 3456 fl oz 52 gal 6656 fl oz 77 gal 9856 fl oz
3 gal 384 fl oz 28 gal 3584 fl oz 53 gal 6784 fl oz 78 gal 9984 fl oz
4 gal 512 fl oz 29 gal 3712 fl oz 54 gal 6912 fl oz 79 gal 10112 fl oz
5 gal 640 fl oz 30 gal 3840 fl oz 55 gal 7040 fl oz 80 gal 10240 fl oz
6 gal 768 fl oz 31 gal 3968 fl oz 56 gal 7168 fl oz 81 gal 10368 fl oz
7 gal 896 fl oz 32 gal 4096 fl oz 57 gal 7296 fl oz 82 gal 10496 fl oz
8 gal 1024 fl oz 33 gal 4224 fl oz 58 gal 7424 fl oz 83 gal 10624 fl oz
9 gal 1152 fl oz 34 gal 4352 fl oz 59 gal 7552 fl oz 84 gal 10752 fl oz
10 gal 1280 fl oz 35 gal 4480 fl oz 60 gal 7680 fl oz 85 gal 10880 fl oz
11 gal 1408 fl oz 36 gal 4608 fl oz 61 gal 7808 fl oz 86 gal 11008 fl oz
12 gal 1536 fl oz 37 gal 4736 fl oz 62 gal 7936 fl oz 87 gal 11136 fl oz
13 gal 1664 fl oz 38 gal 4864 fl oz 63 gal 8064 fl oz 88 gal 11264 fl oz
14 gal 1792 fl oz 39 gal 4992 fl oz 64 gal 8192 fl oz 89 gal 11392 fl oz
15 gal 1920 fl oz 40 gal 5120 fl oz 65 gal 8320 fl oz 90 gal 11520 fl oz
16 gal 2048 fl oz 41 gal 5248 fl oz 66 gal 8448 fl oz 100 gal 12800 fl oz
17 gal 2176 fl oz 42 gal 5376 fl oz 67 gal 8576 fl oz 125 gal 16000 fl oz
18 gal 2304 fl oz 43 gal 5504 fl oz 68 gal 8704 fl oz 150 gal 19200 fl oz
19 gal 2432 fl oz 44 gal 5632 fl oz 69 gal 8832 fl oz 175 gal 22400 fl oz
20 gal 2560 fl oz 45 gal 5760 fl oz 70 gal 8960 fl oz 200 gal 25600 fl oz
21 gal 2688 fl oz 46 gal 5888 fl oz 71 gal 9088 fl oz 250 gal 32000 fl oz
22 gal 2816 fl oz 47 gal 6016 fl oz 72 gal 9216 fl oz 300 gal 38400 fl oz
23 gal 2944 fl oz 48 gal 6144 fl oz 73 gal 9344 fl oz 500 gal 64000 fl oz
24 gal 3072 fl oz 49 gal 6272 fl oz 74 gal 9472 fl oz 750 gal 96000 fl oz
25 gal 3200 fl oz 50 gal 6400 fl oz 75 gal 9600 fl oz 1000 gal 128000 fl oz