US liquid gallon | 1 US gal lqd | 2 US gal lqd | 3 US gal lqd | 4 US gal lqd | 5 US gal lqd | 6 US gal lqd | 7 US gal lqd | 8 US gal lqd | 9 US gal lqd | 10 US gal lqd | 11 US gal lqd | 12 US gal lqd | 13 US gal lqd | 14 US gal lqd | 15 US gal lqd | 16 US gal lqd | 17 US gal lqd | 18 US gal lqd | 19 US gal lqd | 20 US gal lqd | 21 US gal lqd | 22 US gal lqd | 23 US gal lqd | 24 US gal lqd | 25 US gal lqd | 26 US gal lqd | 27 US gal lqd | 28 US gal lqd | 29 US gal lqd | 30 US gal lqd | 31 US gal lqd | 32 US gal lqd | 33 US gal lqd | 34 US gal lqd | 35 US gal lqd | 36 US gal lqd | 37 US gal lqd | 38 US gal lqd | 39 US gal lqd | 40 US gal lqd | 41 US gal lqd | 42 US gal lqd | 43 US gal lqd | 44 US gal lqd | 45 US gal lqd | 46 US gal lqd | 47 US gal lqd | 48 US gal lqd | 49 US gal lqd | 50 US gal lqd | 51 US gal lqd | 52 US gal lqd | 53 US gal lqd | 54 US gal lqd | 55 US gal lqd | 56 US gal lqd | 57 US gal lqd | 58 US gal lqd | 59 US gal lqd | 60 US gal lqd | 61 US gal lqd | 62 US gal lqd | 63 US gal lqd | 64 US gal lqd | 65 US gal lqd | 66 US gal lqd | 67 US gal lqd | 68 US gal lqd | 69 US gal lqd | 70 US gal lqd | 71 US gal lqd | 72 US gal lqd | 73 US gal lqd | 74 US gal lqd | 75 US gal lqd | 76 US gal lqd | 77 US gal lqd | 78 US gal lqd | 79 US gal lqd | 80 US gal lqd | 81 US gal lqd | 82 US gal lqd | 83 US gal lqd | 84 US gal lqd | 85 US gal lqd | 86 US gal lqd | 87 US gal lqd | 88 US gal lqd | 89 US gal lqd | 90 US gal lqd | 91 US gal lqd | 92 US gal lqd | 93 US gal lqd | 94 US gal lqd | 95 US gal lqd | 96 US gal lqd | 97 US gal lqd | 98 US gal lqd | 99 US gal lqd | 100 US gal lqd |
US legal cup | 15.7725491 c (US Legal) | 31.5450982 c (US Legal) | 47.3176473 c (US Legal) | 63.0901964 c (US Legal) | 78.8627455 c (US Legal) | 94.6352946 c (US Legal) | 110.4078437 c (US Legal) | 126.1803928 c (US Legal) | 141.9529419 c (US Legal) | 157.725491 c (US Legal) | 173.4980401 c (US Legal) | 189.2705892 c (US Legal) | 205.0431383 c (US Legal) | 220.8156874 c (US Legal) | 236.5882365 c (US Legal) | 252.3607856 c (US Legal) | 268.1333347 c (US Legal) | 283.9058838 c (US Legal) | 299.6784329 c (US Legal) | 315.450982 c (US Legal) | 331.2235311 c (US Legal) | 346.9960802 c (US Legal) | 362.7686293 c (US Legal) | 378.5411784 c (US Legal) | 394.3137275 c (US Legal) | 410.0862766 c (US Legal) | 425.8588257 c (US Legal) | 441.6313748 c (US Legal) | 457.4039239 c (US Legal) | 473.176473 c (US Legal) | 488.9490221 c (US Legal) | 504.7215712 c (US Legal) | 520.4941203 c (US Legal) | 536.2666694 c (US Legal) | 552.0392185 c (US Legal) | 567.8117676 c (US Legal) | 583.5843167 c (US Legal) | 599.3568658 c (US Legal) | 615.1294149 c (US Legal) | 630.901964 c (US Legal) | 646.6745131 c (US Legal) | 662.4470622 c (US Legal) | 678.2196113 c (US Legal) | 693.9921604 c (US Legal) | 709.7647095 c (US Legal) | 725.5372586 c (US Legal) | 741.3098077 c (US Legal) | 757.0823568 c (US Legal) | 772.8549059 c (US Legal) | 788.627455 c (US Legal) | 804.4000041 c (US Legal) | 820.1725532 c (US Legal) | 835.9451023 c (US Legal) | 851.7176514 c (US Legal) | 867.4902005 c (US Legal) | 883.2627496 c (US Legal) | 899.0352987 c (US Legal) | 914.8078478 c (US Legal) | 930.5803969 c (US Legal) | 946.352946 c (US Legal) | 962.1254951 c (US Legal) | 977.8980442 c (US Legal) | 993.6705933 c (US Legal) | 1,009.4431424 c (US Legal) | 1,025.2156915 c (US Legal) | 1,040.9882406 c (US Legal) | 1,056.7607897 c (US Legal) | 1,072.5333388 c (US Legal) | 1,088.3058879 c (US Legal) | 1,104.078437 c (US Legal) | 1,119.8509861 c (US Legal) | 1,135.6235352 c (US Legal) | 1,151.3960843 c (US Legal) | 1,167.1686334 c (US Legal) | 1,182.9411825 c (US Legal) | 1,198.7137316 c (US Legal) | 1,214.4862807 c (US Legal) | 1,230.2588298 c (US Legal) | 1,246.0313789 c (US Legal) | 1,261.803928 c (US Legal) | 1,277.5764771 c (US Legal) | 1,293.3490262 c (US Legal) | 1,309.1215753 c (US Legal) | 1,324.8941244 c (US Legal) | 1,340.6666735 c (US Legal) | 1,356.4392226 c (US Legal) | 1,372.2117717 c (US Legal) | 1,387.9843208 c (US Legal) | 1,403.7568699 c (US Legal) | 1,419.529419 c (US Legal) | 1,435.3019681 c (US Legal) | 1,451.0745172 c (US Legal) | 1,466.8470663 c (US Legal) | 1,482.6196154 c (US Legal) | 1,498.3921645 c (US Legal) | 1,514.1647136 c (US Legal) | 1,529.9372627 c (US Legal) | 1,545.7098118 c (US Legal) | 1,561.4823609 c (US Legal) | 1,577.25491 c (US Legal) |
The US gallon is legally defined as 231 cubic inches, which is exactly 3.785411784 liters. A US liquid gallon of water weighs about 8.34 pounds or 3.78 kilograms at 62 °F (17 °C), making it about 16.6% lighter than the imperial gallon. There are four quarts in a gallon, two pints in a quart and 16 US fluid ounces in a US pint, which makes the US fluid ounce equal to 1⁄128 of a US gallon. In order to overcome the effects of expansion and contraction with temperature when using a gallon to specify a quantity of material for purposes of trade, it is common to define the temperature at which the material will occupy the specified volume. For example, the volume of petroleum products and alcoholic beverages are both referenced to 60 °F (16 °C) in government regulations.
Name of unit | Symbol | Definition | Relation to SI units | Unit System |
---|---|---|---|---|
US liquid gallon | US gal lqd | ≡ 231 cu in | ≡ 3.785411784×10−3 m3 | Imperial/US |
US liquid gallons | US legal cups | US liquid gallons | US legal cups |
---|---|---|---|
1 | = 15.7725491 | 6 | = 94.6352946 |
2 | = 31.5450982 | 7 | = 110.4078437 |
3 | = 47.3176473 | 8 | = 126.1803928 |
4 | = 63.0901964 | 9 | = 141.9529419 |
5 | = 78.8627455 | 10 | = 157.725491 |
The cup currently used in the United States for nutrition labelling is defined in United States law as 240 ml.
1 U.S. "legal" cup | = | 240 | millilitres |
= | 16 | international tablespoons | |
= | 12 | Australian tablespoons | |
≈ | 8.12 | U.S. customary fluid ounces | |
≈ | 8.45 | imperial fluid ounces |
Name of unit | Symbol | Definition | Relation to SI units | Unit System |
---|---|---|---|---|
US legal cup | c (US Legal) | ≡ 240 mL | = 2.4×10−4 m3 | Imperial/US |
US legal cups | US liquid gallons | US legal cups | US liquid gallons |
---|---|---|---|
1 | = 0.063401292565956 | 6 | = 0.38040775539573 |
2 | = 0.12680258513191 | 7 | = 0.44380904796169 |
3 | = 0.19020387769787 | 8 | = 0.50721034052764 |
4 | = 0.25360517026382 | 9 | = 0.5706116330936 |
5 | = 0.31700646282978 | 10 | = 0.63401292565956 |
US liquid gallons | US legal cups |
---|---|
1 | = 15.7725491 |
0.0634013 | = 1 |
Symbol | Definition |
---|---|
≡ | exactly equal |
≈ | approximately equal to |
= | equal to |
digits | indicates that digits repeat infinitely (e.g. 8.294 369 corresponds to 8.294 369 369 369 369 …) |