| pipe | 1 pipe | 2 pipe | 3 pipe | 4 pipe | 5 pipe | 6 pipe | 7 pipe | 8 pipe | 9 pipe | 10 pipe | 11 pipe | 12 pipe | 13 pipe | 14 pipe | 15 pipe | 16 pipe | 17 pipe | 18 pipe | 19 pipe | 20 pipe | 21 pipe | 22 pipe | 23 pipe | 24 pipe | 25 pipe | 26 pipe | 27 pipe | 28 pipe | 29 pipe | 30 pipe | 31 pipe | 32 pipe | 33 pipe | 34 pipe | 35 pipe | 36 pipe | 37 pipe | 38 pipe | 39 pipe | 40 pipe | 41 pipe | 42 pipe | 43 pipe | 44 pipe | 45 pipe | 46 pipe | 47 pipe | 48 pipe | 49 pipe | 50 pipe | 51 pipe | 52 pipe | 53 pipe | 54 pipe | 55 pipe | 56 pipe | 57 pipe | 58 pipe | 59 pipe | 60 pipe | 61 pipe | 62 pipe | 63 pipe | 64 pipe | 65 pipe | 66 pipe | 67 pipe | 68 pipe | 69 pipe | 70 pipe | 71 pipe | 72 pipe | 73 pipe | 74 pipe | 75 pipe | 76 pipe | 77 pipe | 78 pipe | 79 pipe | 80 pipe | 81 pipe | 82 pipe | 83 pipe | 84 pipe | 85 pipe | 86 pipe | 87 pipe | 88 pipe | 89 pipe | 90 pipe | 91 pipe | 92 pipe | 93 pipe | 94 pipe | 95 pipe | 96 pipe | 97 pipe | 98 pipe | 99 pipe | 100 pipe |
| imperial gallon | 104.9169473 gal (imp) | 209.8338945 gal (imp) | 314.7508418 gal (imp) | 419.6677891 gal (imp) | 524.5847363 gal (imp) | 629.5016836 gal (imp) | 734.4186308 gal (imp) | 839.3355781 gal (imp) | 944.2525254 gal (imp) | 1,049.1694726 gal (imp) | 1,154.0864199 gal (imp) | 1,259.0033672 gal (imp) | 1,363.9203144 gal (imp) | 1,468.8372617 gal (imp) | 1,573.7542089 gal (imp) | 1,678.6711562 gal (imp) | 1,783.5881035 gal (imp) | 1,888.5050507 gal (imp) | 1,993.4219980 gal (imp) | 2,098.3389453 gal (imp) | 2,203.2558925 gal (imp) | 2,308.1728398 gal (imp) | 2,413.0897871 gal (imp) | 2,518.0067343 gal (imp) | 2,622.9236816 gal (imp) | 2,727.8406288 gal (imp) | 2,832.7575761 gal (imp) | 2,937.6745234 gal (imp) | 3,042.5914706 gal (imp) | 3,147.5084179 gal (imp) | 3,252.4253652 gal (imp) | 3,357.3423124 gal (imp) | 3,462.2592597 gal (imp) | 3,567.1762070 gal (imp) | 3,672.0931542 gal (imp) | 3,777.0101015 gal (imp) | 3,881.9270487 gal (imp) | 3,986.8439960 gal (imp) | 4,091.7609433 gal (imp) | 4,196.6778905 gal (imp) | 4,301.5948378 gal (imp) | 4,406.5117851 gal (imp) | 4,511.4287323 gal (imp) | 4,616.3456796 gal (imp) | 4,721.2626268 gal (imp) | 4,826.1795741 gal (imp) | 4,931.0965214 gal (imp) | 5,036.0134686 gal (imp) | 5,140.9304159 gal (imp) | 5,245.8473632 gal (imp) | 5,350.7643104 gal (imp) | 5,455.6812577 gal (imp) | 5,560.5982050 gal (imp) | 5,665.5151522 gal (imp) | 5,770.4320995 gal (imp) | 5,875.3490467 gal (imp) | 5,980.2659940 gal (imp) | 6,085.1829413 gal (imp) | 6,190.0998885 gal (imp) | 6,295.0168358 gal (imp) | 6,399.9337831 gal (imp) | 6,504.8507303 gal (imp) | 6,609.7676776 gal (imp) | 6,714.6846248 gal (imp) | 6,819.6015721 gal (imp) | 6,924.5185194 gal (imp) | 7,029.4354666 gal (imp) | 7,134.3524139 gal (imp) | 7,239.2693612 gal (imp) | 7,344.1863084 gal (imp) | 7,449.1032557 gal (imp) | 7,554.0202030 gal (imp) | 7,658.9371502 gal (imp) | 7,763.8540975 gal (imp) | 7,868.7710447 gal (imp) | 7,973.6879920 gal (imp) | 8,078.6049393 gal (imp) | 8,183.5218865 gal (imp) | 8,288.4388338 gal (imp) | 8,393.3557811 gal (imp) | 8,498.2727283 gal (imp) | 8,603.1896756 gal (imp) | 8,708.1066229 gal (imp) | 8,813.0235701 gal (imp) | 8,917.9405174 gal (imp) | 9,022.8574646 gal (imp) | 9,127.7744119 gal (imp) | 9,232.6913592 gal (imp) | 9,337.6083064 gal (imp) | 9,442.5252537 gal (imp) | 9,547.4422010 gal (imp) | 9,652.3591482 gal (imp) | 9,757.2760955 gal (imp) | 9,862.1930427 gal (imp) | 9,967.1099900 gal (imp) | 10,072.0269373 gal (imp) | 10,176.9438845 gal (imp) | 10,281.8608318 gal (imp) | 10,386.7777791 gal (imp) | 10,491.6947263 gal (imp) |
The pipe was a measure of liquid volume equalling two hogsheads. This equated to 108 imperial gallons (490 l) for ale or 126 imperial gallons (570 l) for wine (also known as a butt).
| Name of unit | Symbol | Definition | Relation to SI units | Unit System |
|---|---|---|---|---|
| pipe | ≡ 126 gal (wine) | = 0.476961884784 m3 | Imperial/US |
| pipes | imperial gallons | pipes | imperial gallons |
|---|---|---|---|
| 1 | = 104.91694726325 | 6 | = 629.50168357952 |
| 2 | = 209.83389452651 | 7 | = 734.41863084277 |
| 3 | = 314.75084178976 | 8 | = 839.33557810602 |
| 4 | = 419.66778905301 | 9 | = 944.25252536927 |
| 5 | = 524.58473631626 | 10 | = 1049.1694726325 |
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 | pipes | imperial gallons | pipes |
|---|---|---|---|
| 1 | = 0.0095313486151179 | 6 | = 0.057188091690707 |
| 2 | = 0.019062697230236 | 7 | = 0.066719440305825 |
| 3 | = 0.028594045845354 | 8 | = 0.076250788920943 |
| 4 | = 0.038125394460472 | 9 | = 0.085782137536061 |
| 5 | = 0.047656743075589 | 10 | = 0.095313486151179 |
| pipes | imperial gallons |
|---|---|
| 1 | = 104.9169473 |
| 0.0095313 | = 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 …) |