Gallons to Fluid Ounces (oz) Converter

gallons to fluid ounces table

gallon 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 500 1000
fluid ounce 128 256 384 512 640 768 896 1024 1152 1280 1408 1536 1664 1792 1920 2048 2176 2304 2432 2560 2688 2816 2944 3072 3200 3328 3456 3584 3712 3840 3968 4096 4224 4352 4480 4608 4736 4864 4992 5120 5248 5376 5504 5632 5760 5888 6016 6144 6272 6400 6528 6656 6784 6912 7040 7168 7296 7424 7552 7680 7808 7936 8064 8192 8320 8448 8576 8704 8832 8960 9088 9216 9344 9472 9600 9728 9856 9984 10112 10240 10368 10496 10624 10752 10880 11008 11136 11264 11392 11520 11648 11776 11904 12032 12160 12288 12416 12544 12672 12800 64000 128000
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In this conversion page, the tables and the converter are based on the US fluid gallons and the US fluid ounces.

How many fluid ounces in a gallon?

There are three types of gallons, US Customary fluid and dry gallons and the Imperial gallon. There are two types of fluid ounces, US Customary fluid ounce and the Imperial fluid ounce. So, depending on what types of gallons and fluid ounces are used, the answer to the question of how many ounces in a gallon might be different. If you are converting from US fluid gallons to fluid ounces, then there are 128 fluid ounces in a gallon. If the conversion is between Imperial gallons and Imperial fluid ounces, then there are 160 Imperial fluid ounces in an Imperial gallon.

The list of conversion factors from gallons to fluid ounces:

  • 1 US fluid gallon = 128 US fluid ounces
  • 1 Imperial gallon= 160 Imperial fluid ounces

How to convert gallons to ounces?

There are 128 ounces in a gallon. To convert gallons to ounces, multiply the gallon value by 128.

For example, to find out how many ounces there are in a half gallon, multiply 128 by 0.5, that makes 64 ounces in a half gallon.

gallons to fluid ounces formula:

fluid ounce = gallon * 128

Common conversions from gallons to fluid ounces (fl oz):

  • 1/8 gallon = 16 oz
  • 1/4 gallon = 32 oz
  • 1/3 gallon = 42.66 oz
  • 1/2 gallon = 64 oz
  • 2 gallons = 256 oz

To convert between imperial gallons and fluid ounces, please visit imperial gallons to fluid ounces converter.

How many water bottles are there in a gallon?

1 US gallon is equal to 128 US fluid ounces. To find out how many water bottles there are in gallons, multiply the number of gallons by 128 and divide by the size of the water bottle in fluid ounces.

For example, to find out how many 16.9 oz water bottles there are in 3 gallons, multiply 3 by 128 and divide by 16.9, that makes 22.72 water bottles of 16.9 oz in 3 gallons.

water bottles in a gallons:

  • there are 16 water bottles of 8 oz in a US gallon
  • there are 10.6 water bottles of 12 oz in a US gallon
  • there are 7.57 water bottles of 16.9 oz in a US gallon
  • there are 6.4 water bottles of 20 oz in a US gallon
  • there are 5.3 water bottles of 24 oz in a US gallon
  • there are 3.78 water bottles of 33.8 oz in a US gallon

To calculate how many water bottles of different sizes can fit in gallons and view the gallons to water bottles table, please visit how many water bottles are in gallons.

What is a Gallon?

Gallon is an imperial and United States Customary systems volume unit. 1 US gallon = 128 US fluid ounces. 1 Imperial gallon = 160 Imperial fluid ounces. The symbol is "gal".

To convert from US fluid, dry and UK gallons to UK and US fluid ounces, please visit all volume units conversion.

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