Gallons to Fluid Ounces Conversion

US galllon to fluid oz table

gal 1/8 1/4 1/2 3/4 1 1.1 1.2 1.3 1.4 1.5 1.6 1.7 1.8 1.9 2 2.1 2.2 2.3 2.4 2.5 2.6 2.7 2.8 2.9 3 3.1 3.2 3.3 3.4 3.5 3.6 3.7 3.8 3.9 4 4.1 4.2 4.3 4.4 4.5 4.6 4.7 4.8 4.9 5 5.1 5.2 5.3 5.4 5.5 5.6 5.7 5.8 5.9 6 6.1 6.2 6.3 6.4 6.5 6.6 6.7 6.8 6.9 7 7.1 7.2 7.3 7.4 7.5 7.6 7.7 7.8 7.9 8 8.1 8.2 8.3 8.4 8.5 8.6 8.7 8.8 8.9 9 9.1 9.2 9.3 9.4 9.5 9.6 9.7 9.8 9.9 10 20 30 40 50 60 70 80 90 100
fl oz 16 32 64 96 128 140.8 153.6 166.4 179.2 192 204.8 217.6 230.4 243.2 256 268.8 281.6 294.4 307.2 320 332.8 345.6 358.4 371.2 384 396.8 409.6 422.4 435.2 448 460.8 473.6 486.4 499.2 512 524.8 537.6 550.4 563.2 576 588.8 601.6 614.4 627.2 640 652.8 665.6 678.4 691.2 704 716.8 729.6 742.4 755.2 768 780.8 793.6 806.4 819.2 832 844.8 857.6 870.4 883.2 896 908.8 921.6 934.4 947.2 960 972.8 985.6 998.4 1011.2 1024 1036.8 1049.6 1062.4 1075.2 1088 1100.8 1113.6 1126.4 1139.2 1152 1164.8 1177.6 1190.4 1203.2 1216 1228.8 1241.6 1254.4 1267.2 1280 2560 3840 5120 6400 7680 8960 10240 11520 12800
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step
Round:
Enter Gallon
Enter Fluid Ounce

How many fluid ounces in a gallon?

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

For example, to find out how many fluid ounces there are in a gallon and a half, multiply 1.5 by 128, that makes 192 fluid ounces in a gallon and a half.

US gallons to fluid ounces formula

fl oz = gallon * 128

1 US Gallon = 128 US Fluid Ounces

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

What is a Gallon?

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

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

Common conversions from US gallons to fluid ounces

  • 1/8 gal = 16 fl oz
  • 1/4 gal = 32 fl oz
  • 1/3 gal = 42.66 fl oz
  • 1/2 gal = 64 fl oz
  • 1 gal = 128 fl oz
  • 1.5 gal = 192 fl oz
  • 2 gal = 256 fl oz
  • 2.5 gal = 320 fl oz

You may also use volume units conversion to convert all volume units.

Create Conversion Table
Click "Create Table". Enter a "Start" value (5, 100 etc). Select an "Increment" value (0.01, 5 etc) and select "Accuracy" to round the result.