Gallon is the most commonly used term in the United States. In this blog, we will share complete knowledge about gallons and help you to understand how to convert gallons into other units.
What is a gallon?
A gallon is a unit of measurement for Volume. The gallon is prominently used in the United States and in some of the Common Wealth and Caribbean countries.
How many types of gallons?
There are three types of Gallons that we usually use.
US gallon
Used in the United States and some Latin American countries. The gallon is the volume occupied by a cylinder which is 7 inches in dia and 6 inches in depth. In this calculation, the pie is considered as 22/7. so one US gallon is 231 cubic inches.
Imperial gallon
This volume measurement is in use or was used in some Common Wealth counties such as the United Kingdom, Canada, Ireland, New Zealand, Australia, and some Caribbean countries. An imperial gallon is 10 pounds of distilled water measured in the air using brass weights. The exact calculation of the Imperial gallon comes to 277.419 cubic inches.
US dry gallon
Used in the United States and some Latin American countries. US dry gallon is 1/8th of a cylinder with 18 and a half inches dia and 8 inches depth. The volume comes to be 268.8025 cubic inches.
How to convert gallons
There are 3 ways to convert gallons
1. By using Online Gallon Converter
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2. By using the gallon calculation formula
Know How to convert Gallons to Cubic Inch
1 US gallon is = 231 cubic inches
1 Imperial gallon is = 277.4195 cubic inches
1 US dry gallon is = 268.8025 cubic inches
Know How to convert Gallons to Cubic feet
12 inches = 1 foot
1 cubic inch = 1/12 X 1/12 X 1/12 cubic feet
1 US gallon = 231 X 1/12 X 1/12 X 1/12 cubic feet
1 US gallon = 0.133681 cubic feet
1 Imperial gallon = 277.4195 X 1/12 X 1/12 X 1/12 cubic feet
1 Imperial gallon = 0.1605 cubic feet
1 US dry gallon = 268.8025 X 1/12 X 1/12 X 1/12 cubic feet
1 US dry gallon = 0.15556 cubic feet
Know How to convert Gallons to Cubic Meters
1 inch = 25.4 millimeter , 1000 millimeter = 1 meter , then 1 inch = 0.0254 meter
1 cubic inch = 0.0254 X 0.0254 X 0.0254 cubic meter
1 US gallon = 231 cubic inch = 231 X 0.0254 X 0.0254 X 0.0254 cubic meter
1 US gallon = 0.003785411784 cubic meter
1 Imperial gallon = 277.4195 cubic inches = 277.4195 X 0.0254 X 0.0254 X 0.0254 cubic meter
1 Imperial gallon = 0.004546083 cubic meter
1 US dry gallon = 268.8025 X 0.0254 X 0.0254 X 0.0254 cubic meter
1 US dry gallon = 0.004404884 cubic meter
Know How to convert Gallons to Liter
1 cubic meter = 1000 liter
1 US gallon = 231 X 0.0254 X 0.0254 X 0.0254 X 1000 liter
1 US gallon = 3.785411784 liter
1 Imperia gallon = 277.4195 X 0.0254 X 0.0254 X 0.0254 X 1000 liter
1 Imperial gallon = 4.546083 liter
1 US dry gallon = 268.8025 X 0.0254 X 0.0254 X 0.0254 X 1000 liter
1 US dry gallon = 4.404884 liter
Know How to convert Gallons to Quarts
1 gallon = 4 quarts
Gallon can either be US Gallon or an Imperial Gallon.
Know How to convert Gallons to Pints
1 gallon = 8 pints
Gallon can either be US Gallon or an Imperial Gallon.
Know How to convert Gallons to Cups
1 gallon = 16 Cups
Gallon can either be US Gallon or an Imperial Gallon.
Know How to convert Gallons to Fluid Ounces
1 gallon = 128 fluid ounces
Gallon can either be US Gallon or an Imperial Gallon.
Know How to convert Gallons to Tablespoons
1 gallon = 256 Tablespoons
Gallon can either be US Gallon or an Imperial Gallon.
Know How to convert Gallons to Teaspoons
1 gallon = 768 teaspoons
Gallon can either be US Gallon or an Imperial Gallon.
Know How to convert Gallons to US Oil Barrel
1 US oil barrel = 42 US gallons
1 US gallon = 1/42 US oil barrel
1 US gallon = 0.02381 US Oil barrel
3. By using a table
By using the table below you can easily convert gallons to other units.
US Gallons

US Gallons | 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 |
US Quarts | 4 | 8 | 12 | 16 | 20 | 24 | 28 | 32 | 36 | 40 |
US Pints | 8 | 16 | 24 | 32 | 40 | 48 | 56 | 64 | 72 | 80 |
US Cups | 16 | 32 | 48 | 64 | 80 | 96 | 112 | 128 | 144 | 160 |
US Fluid Ounces | 128 | 256 | 384 | 512 | 640 | 768 | 896 | 1024 | 1152 | 1280 |
US Tablespoons | 256 | 512 | 768 | 1024 | 1280 | 1536 | 1792 | 2048 | 2304 | 2560 |
US Teaspoons | 768 | 1536 | 2304 | 3072 | 3840 | 4608 | 5376 | 6144 | 6912 | 7680 |
US Oil Barrel | 0.0238 | 0.0476 | 0.0714 | 0.0952 | 0.1190 | 0.1429 | 0.1667 | 0.1905 | 0.2143 | 0.2381 |
Cubic inch | 231 | 462 | 693 | 924 | 1155 | 1386 | 1617 | 1848 | 2079 | 2310 |
Cubic Feet | 0.13 | 0.27 | 0.40 | 0.53 | 0.67 | 0.80 | 0.94 | 1.07 | 1.20 | 1.34 |
Milli Liter | 3785.4 | 7570.8 | 11356.2 | 15141.6 | 18927.1 | 22712.5 | 26497.9 | 30283.3 | 34068.7 | 37854.1 |
Liter | 3.79 | 7.57 | 11.36 | 15.14 | 18.93 | 22.71 | 26.50 | 30.28 | 34.07 | 37.85 |
Kilo Liter | 0.0038 | 0.0076 | 0.0114 | 0.0151 | 0.0189 | 0.0227 | 0.0265 | 0.0303 | 0.0341 | 0.0379 |
Cubic Meter | 0.0038 | 0.0076 | 0.0114 | 0.0151 | 0.0189 | 0.0227 | 0.0265 | 0.0303 | 0.0341 | 0.0379 |
Imperial Gallons | 0.83 | 1.67 | 2.50 | 3.33 | 4.16 | 5.00 | 5.83 | 6.66 | 7.49 | 8.33 |
Imperial Quarts | 3.3 | 6.7 | 10.0 | 13.3 | 16.7 | 20.0 | 23.3 | 26.6 | 30.0 | 33.3 |
Imperial Pints | 6.7 | 13.3 | 20.0 | 26.6 | 33.3 | 40.0 | 46.6 | 53.3 | 60.0 | 66.6 |
Imperial Cups | 13.3 | 26.6 | 40.0 | 53.3 | 66.6 | 79.9 | 93.3 | 106.6 | 119.9 | 133.2 |
Imperial Fluid Ounces | 106.6 | 213.2 | 319.7 | 426.3 | 532.9 | 639.5 | 746.1 | 852.7 | 959.2 | 1065.8 |
Imperial Tablespoons | 213.2 | 426.3 | 639.5 | 852.7 | 1065.8 | 1279.0 | 1492.2 | 1705.3 | 1918.5 | 2131.6 |
Imperial Teaspoons | 639.5 | 1279.0 | 1918.5 | 2558.0 | 3197.5 | 3837.0 | 4476.5 | 5116.0 | 5755.5 | 6394.9 |
Imperial Gallons

Imperial Gallons | 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 |
Imperial Quarts | 4 | 8 | 12 | 16 | 20 | 24 | 28 | 32 | 36 | 40 |
Imperial Pints | 8 | 16 | 24 | 32 | 40 | 48 | 56 | 64 | 72 | 80 |
Imperial Cups | 16 | 32 | 48 | 64 | 80 | 96 | 112 | 128 | 144 | 160 |
Imperial Fluid Ounces | 128 | 256 | 384 | 512 | 640 | 768 | 896 | 1024 | 1152 | 1280 |
Imperial Tablespoons | 256 | 512 | 768 | 1024 | 1280 | 1536 | 1792 | 2048 | 2304 | 2560 |
Imperial Teaspoons | 768 | 1536 | 2304 | 3072 | 3840 | 4608 | 5376 | 6144 | 6912 | 7680 |
US Gallons | 1.2 | 2.4 | 3.6 | 4.8 | 6.0 | 7.2 | 8.4 | 9.6 | 10.8 | 12.0 |
US Quarts | 4.8 | 9.6 | 14.4 | 19.2 | 24.0 | 28.8 | 33.6 | 38.4 | 43.2 | 48.0 |
US Pints | 9.6 | 19.2 | 28.8 | 38.4 | 48.0 | 57.6 | 67.3 | 76.9 | 86.5 | 96.1 |
US Cups | 19.2 | 38.4 | 57.6 | 76.9 | 96.1 | 115.3 | 134.5 | 153.7 | 172.9 | 192.2 |
US Fluid Ounces | 153.7 | 307.4 | 461.2 | 614.9 | 768.6 | 922.3 | 1076.0 | 1229.8 | 1383.5 | 1537.2 |
US Tablespoons | 307.4 | 614.9 | 922.3 | 1229.8 | 1537.2 | 1844.7 | 2152.1 | 2459.5 | 2767.0 | 3074.4 |
US Teaspoons | 922.3 | 1844.7 | 2767.0 | 3689.3 | 4611.6 | 5534.0 | 6456.3 | 7378.6 | 8301.0 | 9223.3 |
US Oil Barrel | 0.0 | 0.1 | 0.1 | 0.1 | 0.1 | 0.2 | 0.2 | 0.2 | 0.3 | 0.3 |
Cubic inch | 277.4 | 554.8 | 832.3 | 1109.7 | 1387.1 | 1664.5 | 1941.9 | 2219.4 | 2496.8 | 2774.2 |
Cubic Feet | 0.2 | 0.3 | 0.5 | 0.6 | 0.8 | 1.0 | 1.1 | 1.3 | 1.4 | 1.6 |
Milli Liter | 4546.1 | 9092.2 | 13638.2 | 18184.3 | 22730.4 | 27276.5 | 31822.6 | 36368.7 | 40914.7 | 45460.8 |
Liter | 4.5 | 9.1 | 13.6 | 18.2 | 22.7 | 27.3 | 31.8 | 36.4 | 40.9 | 45.5 |
Kilo Liter | 0.0045 | 0.0091 | 0.0136 | 0.0182 | 0.0227 | 0.0273 | 0.0318 | 0.0364 | 0.0409 | 0.0455 |
Cubic Meter | 0.0045 | 0.0091 | 0.0136 | 0.0182 | 0.0227 | 0.0273 | 0.0318 | 0.0364 | 0.0409 | 0.0455 |
Summary
We hope you have an excellent understanding of the gallon and its conversion. Let's summarize
- A gallon is a measurement unit for the volume.
- There are three types of gallon which are commonly used.
- 1 US gallon = 3.7854 liter
- 1 Imperial gallon = 4.546 liter
- 1 US dry gallon is = 4.405 liter
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