| imperial gallon | 1 gal (imp) | 2 gal (imp) | 3 gal (imp) | 4 gal (imp) | 5 gal (imp) | 6 gal (imp) | 7 gal (imp) | 8 gal (imp) | 9 gal (imp) | 10 gal (imp) | 11 gal (imp) | 12 gal (imp) | 13 gal (imp) | 14 gal (imp) | 15 gal (imp) | 16 gal (imp) | 17 gal (imp) | 18 gal (imp) | 19 gal (imp) | 20 gal (imp) | 21 gal (imp) | 22 gal (imp) | 23 gal (imp) | 24 gal (imp) | 25 gal (imp) | 26 gal (imp) | 27 gal (imp) | 28 gal (imp) | 29 gal (imp) | 30 gal (imp) | 31 gal (imp) | 32 gal (imp) | 33 gal (imp) | 34 gal (imp) | 35 gal (imp) | 36 gal (imp) | 37 gal (imp) | 38 gal (imp) | 39 gal (imp) | 40 gal (imp) | 41 gal (imp) | 42 gal (imp) | 43 gal (imp) | 44 gal (imp) | 45 gal (imp) | 46 gal (imp) | 47 gal (imp) | 48 gal (imp) | 49 gal (imp) | 50 gal (imp) | 51 gal (imp) | 52 gal (imp) | 53 gal (imp) | 54 gal (imp) | 55 gal (imp) | 56 gal (imp) | 57 gal (imp) | 58 gal (imp) | 59 gal (imp) | 60 gal (imp) | 61 gal (imp) | 62 gal (imp) | 63 gal (imp) | 64 gal (imp) | 65 gal (imp) | 66 gal (imp) | 67 gal (imp) | 68 gal (imp) | 69 gal (imp) | 70 gal (imp) | 71 gal (imp) | 72 gal (imp) | 73 gal (imp) | 74 gal (imp) | 75 gal (imp) | 76 gal (imp) | 77 gal (imp) | 78 gal (imp) | 79 gal (imp) | 80 gal (imp) | 81 gal (imp) | 82 gal (imp) | 83 gal (imp) | 84 gal (imp) | 85 gal (imp) | 86 gal (imp) | 87 gal (imp) | 88 gal (imp) | 89 gal (imp) | 90 gal (imp) | 91 gal (imp) | 92 gal (imp) | 93 gal (imp) | 94 gal (imp) | 95 gal (imp) | 96 gal (imp) | 97 gal (imp) | 98 gal (imp) | 99 gal (imp) | 100 gal (imp) |
| US legal cup | 18.9420417 c (US Legal) | 37.8840833 c (US Legal) | 56.826125 c (US Legal) | 75.7681667 c (US Legal) | 94.7102083 c (US Legal) | 113.65225 c (US Legal) | 132.5942917 c (US Legal) | 151.5363333 c (US Legal) | 170.478375 c (US Legal) | 189.4204167 c (US Legal) | 208.3624583 c (US Legal) | 227.3045 c (US Legal) | 246.2465417 c (US Legal) | 265.1885833 c (US Legal) | 284.130625 c (US Legal) | 303.0726667 c (US Legal) | 322.0147083 c (US Legal) | 340.95675 c (US Legal) | 359.8987917 c (US Legal) | 378.8408333 c (US Legal) | 397.782875 c (US Legal) | 416.7249167 c (US Legal) | 435.6669583 c (US Legal) | 454.609 c (US Legal) | 473.5510417 c (US Legal) | 492.4930833 c (US Legal) | 511.435125 c (US Legal) | 530.3771667 c (US Legal) | 549.3192083 c (US Legal) | 568.26125 c (US Legal) | 587.2032917 c (US Legal) | 606.1453333 c (US Legal) | 625.087375 c (US Legal) | 644.0294167 c (US Legal) | 662.9714583 c (US Legal) | 681.9135 c (US Legal) | 700.8555417 c (US Legal) | 719.7975833 c (US Legal) | 738.739625 c (US Legal) | 757.6816667 c (US Legal) | 776.6237083 c (US Legal) | 795.56575 c (US Legal) | 814.5077917 c (US Legal) | 833.4498333 c (US Legal) | 852.391875 c (US Legal) | 871.3339167 c (US Legal) | 890.2759583 c (US Legal) | 909.218 c (US Legal) | 928.1600417 c (US Legal) | 947.1020833 c (US Legal) | 966.044125 c (US Legal) | 984.9861667 c (US Legal) | 1,003.9282083 c (US Legal) | 1,022.87025 c (US Legal) | 1,041.8122917 c (US Legal) | 1,060.7543333 c (US Legal) | 1,079.696375 c (US Legal) | 1,098.6384167 c (US Legal) | 1,117.5804583 c (US Legal) | 1,136.5225 c (US Legal) | 1,155.4645417 c (US Legal) | 1,174.4065833 c (US Legal) | 1,193.348625 c (US Legal) | 1,212.2906667 c (US Legal) | 1,231.2327083 c (US Legal) | 1,250.17475 c (US Legal) | 1,269.1167917 c (US Legal) | 1,288.0588333 c (US Legal) | 1,307.000875 c (US Legal) | 1,325.9429167 c (US Legal) | 1,344.8849583 c (US Legal) | 1,363.827 c (US Legal) | 1,382.7690417 c (US Legal) | 1,401.7110833 c (US Legal) | 1,420.653125 c (US Legal) | 1,439.5951667 c (US Legal) | 1,458.5372083 c (US Legal) | 1,477.47925 c (US Legal) | 1,496.4212917 c (US Legal) | 1,515.3633333 c (US Legal) | 1,534.305375 c (US Legal) | 1,553.2474167 c (US Legal) | 1,572.1894583 c (US Legal) | 1,591.1315 c (US Legal) | 1,610.0735417 c (US Legal) | 1,629.0155833 c (US Legal) | 1,647.957625 c (US Legal) | 1,666.8996667 c (US Legal) | 1,685.8417083 c (US Legal) | 1,704.78375 c (US Legal) | 1,723.7257917 c (US Legal) | 1,742.6678333 c (US Legal) | 1,761.609875 c (US Legal) | 1,780.5519167 c (US Legal) | 1,799.4939583 c (US Legal) | 1,818.436 c (US Legal) | 1,837.3780417 c (US Legal) | 1,856.3200833 c (US Legal) | 1,875.262125 c (US Legal) | 1,894.2041667 c (US Legal) |
The imperial (UK) gallon, now defined as exactly 4.54609 litres (about 277.42 cubic inches), is used in some Commonwealth countries and was originally based on the volume of 10 pounds (approximately 4.54 kg) of water at 62 °F (17 °C). The imperial fluid ounce is defined as 1⁄160 of an imperial gallon; there are four quarts in a gallon, two pints in a quart, and 20 Imperial fluid ounces in an imperial pint.
| 1 imperial gallons = 18.942041666667 US legal cups | 6 imperial gallons = 113.65225 US legal cups |
| 2 imperial gallons = 37.884083333333 US legal cups | 7 imperial gallons = 132.59429166667 US legal cups |
| 3 imperial gallons = 56.826125 US legal cups | 8 imperial gallons = 151.53633333333 US legal cups |
| 4 imperial gallons = 75.768166666667 US legal cups | 9 imperial gallons = 170.478375 US legal cups |
| 5 imperial gallons = 94.710208333333 US legal cups | 10 imperial gallons = 189.42041666667 US legal cups |
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 |
| 1 US legal cups = 0.052792619591781 imperial gallons | 6 US legal cups = 0.31675571755069 imperial gallons |
| 2 US legal cups = 0.10558523918356 imperial gallons | 7 US legal cups = 0.36954833714247 imperial gallons |
| 3 US legal cups = 0.15837785877534 imperial gallons | 8 US legal cups = 0.42234095673425 imperial gallons |
| 4 US legal cups = 0.21117047836712 imperial gallons | 9 US legal cups = 0.47513357632603 imperial gallons |
| 5 US legal cups = 0.26396309795891 imperial gallons | 10 US legal cups = 0.52792619591781 imperial gallons |
| 1 imperial gallons = 18.9420417 US legal cups |
| 1 US legal cups = 0.0527926 imperial gallons |