| US legal cup | 1 c (US Legal) | 2 c (US Legal) | 3 c (US Legal) | 4 c (US Legal) | 5 c (US Legal) | 6 c (US Legal) | 7 c (US Legal) | 8 c (US Legal) | 9 c (US Legal) | 10 c (US Legal) | 11 c (US Legal) | 12 c (US Legal) | 13 c (US Legal) | 14 c (US Legal) | 15 c (US Legal) | 16 c (US Legal) | 17 c (US Legal) | 18 c (US Legal) | 19 c (US Legal) | 20 c (US Legal) | 21 c (US Legal) | 22 c (US Legal) | 23 c (US Legal) | 24 c (US Legal) | 25 c (US Legal) | 26 c (US Legal) | 27 c (US Legal) | 28 c (US Legal) | 29 c (US Legal) | 30 c (US Legal) | 31 c (US Legal) | 32 c (US Legal) | 33 c (US Legal) | 34 c (US Legal) | 35 c (US Legal) | 36 c (US Legal) | 37 c (US Legal) | 38 c (US Legal) | 39 c (US Legal) | 40 c (US Legal) | 41 c (US Legal) | 42 c (US Legal) | 43 c (US Legal) | 44 c (US Legal) | 45 c (US Legal) | 46 c (US Legal) | 47 c (US Legal) | 48 c (US Legal) | 49 c (US Legal) | 50 c (US Legal) | 51 c (US Legal) | 52 c (US Legal) | 53 c (US Legal) | 54 c (US Legal) | 55 c (US Legal) | 56 c (US Legal) | 57 c (US Legal) | 58 c (US Legal) | 59 c (US Legal) | 60 c (US Legal) | 61 c (US Legal) | 62 c (US Legal) | 63 c (US Legal) | 64 c (US Legal) | 65 c (US Legal) | 66 c (US Legal) | 67 c (US Legal) | 68 c (US Legal) | 69 c (US Legal) | 70 c (US Legal) | 71 c (US Legal) | 72 c (US Legal) | 73 c (US Legal) | 74 c (US Legal) | 75 c (US Legal) | 76 c (US Legal) | 77 c (US Legal) | 78 c (US Legal) | 79 c (US Legal) | 80 c (US Legal) | 81 c (US Legal) | 82 c (US Legal) | 83 c (US Legal) | 84 c (US Legal) | 85 c (US Legal) | 86 c (US Legal) | 87 c (US Legal) | 88 c (US Legal) | 89 c (US Legal) | 90 c (US Legal) | 91 c (US Legal) | 92 c (US Legal) | 93 c (US Legal) | 94 c (US Legal) | 95 c (US Legal) | 96 c (US Legal) | 97 c (US Legal) | 98 c (US Legal) | 99 c (US Legal) | 100 c (US Legal) |
| imperial gallon | 0.0527926 gal (imp) | 0.1055852 gal (imp) | 0.1583779 gal (imp) | 0.2111705 gal (imp) | 0.2639631 gal (imp) | 0.3167557 gal (imp) | 0.3695483 gal (imp) | 0.4223410 gal (imp) | 0.4751336 gal (imp) | 0.5279262 gal (imp) | 0.5807188 gal (imp) | 0.6335114 gal (imp) | 0.6863041 gal (imp) | 0.7390967 gal (imp) | 0.7918893 gal (imp) | 0.8446819 gal (imp) | 0.8974745 gal (imp) | 0.9502672 gal (imp) | 1.0030598 gal (imp) | 1.0558524 gal (imp) | 1.1086450 gal (imp) | 1.1614376 gal (imp) | 1.2142303 gal (imp) | 1.2670229 gal (imp) | 1.3198155 gal (imp) | 1.3726081 gal (imp) | 1.4254007 gal (imp) | 1.4781933 gal (imp) | 1.5309860 gal (imp) | 1.5837786 gal (imp) | 1.6365712 gal (imp) | 1.6893638 gal (imp) | 1.7421564 gal (imp) | 1.7949491 gal (imp) | 1.8477417 gal (imp) | 1.9005343 gal (imp) | 1.9533269 gal (imp) | 2.0061195 gal (imp) | 2.0589122 gal (imp) | 2.1117048 gal (imp) | 2.1644974 gal (imp) | 2.2172900 gal (imp) | 2.2700826 gal (imp) | 2.3228753 gal (imp) | 2.3756679 gal (imp) | 2.4284605 gal (imp) | 2.4812531 gal (imp) | 2.5340457 gal (imp) | 2.5868384 gal (imp) | 2.6396310 gal (imp) | 2.6924236 gal (imp) | 2.7452162 gal (imp) | 2.7980088 gal (imp) | 2.8508015 gal (imp) | 2.9035941 gal (imp) | 2.9563867 gal (imp) | 3.0091793 gal (imp) | 3.0619719 gal (imp) | 3.1147646 gal (imp) | 3.1675572 gal (imp) | 3.2203498 gal (imp) | 3.2731424 gal (imp) | 3.3259350 gal (imp) | 3.3787277 gal (imp) | 3.4315203 gal (imp) | 3.4843129 gal (imp) | 3.5371055 gal (imp) | 3.5898981 gal (imp) | 3.6426908 gal (imp) | 3.6954834 gal (imp) | 3.7482760 gal (imp) | 3.8010686 gal (imp) | 3.8538612 gal (imp) | 3.9066538 gal (imp) | 3.9594465 gal (imp) | 4.0122391 gal (imp) | 4.0650317 gal (imp) | 4.1178243 gal (imp) | 4.1706169 gal (imp) | 4.2234096 gal (imp) | 4.2762022 gal (imp) | 4.3289948 gal (imp) | 4.3817874 gal (imp) | 4.4345800 gal (imp) | 4.4873727 gal (imp) | 4.5401653 gal (imp) | 4.5929579 gal (imp) | 4.6457505 gal (imp) | 4.6985431 gal (imp) | 4.7513358 gal (imp) | 4.8041284 gal (imp) | 4.8569210 gal (imp) | 4.9097136 gal (imp) | 4.9625062 gal (imp) | 5.0152989 gal (imp) | 5.0680915 gal (imp) | 5.1208841 gal (imp) | 5.1736767 gal (imp) | 5.2264693 gal (imp) | 5.2792620 gal (imp) |
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 | imperial gallons | US legal cups | imperial gallons |
|---|---|---|---|
| 1 | = 0.052792619591781 | 6 | = 0.31675571755069 |
| 2 | = 0.10558523918356 | 7 | = 0.36954833714247 |
| 3 | = 0.15837785877534 | 8 | = 0.42234095673425 |
| 4 | = 0.21117047836712 | 9 | = 0.47513357632603 |
| 5 | = 0.26396309795891 | 10 | = 0.52792619591781 |
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.
| Name of unit | Symbol | Definition | Relation to SI units | Unit System |
|---|---|---|---|---|
| imperial gallon | gal (imp) | ≡ 4.54609 L | ≡ 4.54609×10−3 m3 | Imperial/US |
| imperial gallons | US legal cups | imperial gallons | US legal cups |
|---|---|---|---|
| 1 | = 18.942041666667 | 6 | = 113.65225 |
| 2 | = 37.884083333333 | 7 | = 132.59429166667 |
| 3 | = 56.826125 | 8 | = 151.53633333333 |
| 4 | = 75.768166666667 | 9 | = 170.478375 |
| 5 | = 94.710208333333 | 10 | = 189.42041666667 |
| US legal cups | imperial gallons |
|---|---|
| 1 | = 0.0527926 |
| 18.9420417 | = 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 …) |