Editing Gallon (section)

===Sizes of gallons===
Historically, gallons of various sizes were used in many parts of Western Europe. In these localities, it has been replaced as the unit of capacity by the [[litre]].

{|class="wikitable" style=text-align:center;
|+ Comparison of gallons
|-
!colspan="2"| Volume
!rowspan="2"| Definition
!rowspan="2"| Inverted<br>volume<br/>(gal/cu ft)
!rowspan="2"| Weight as<br/>water at {{cvt|62|F}}<br/>([[avoirdupois|pounds]]/gal)
!colspan="3"| Cylindrical approximation
|-
! ([[cu in]])
! ([[Litre|dm<sup>3</sup>]])
! Diameter<br/>(in)
! Height<br/>(in)
! Volume [[relative error|rel.<br/>error]] (%)
|-
!colspan=8 |Current gallons
|-
| 231 || {{val|3.785411784}}
| Statute of 5 Queen Anne (1706) <br /> UK wine gallon<br /> '''US gallon''' (legally adopted 1836 US)
| {{sfrac|7|37|77}} || 8.3454
| 7 || 6 || 0.04
|-
| ≈ 277.4194 || {{val|4.54609}}
| '''Imperial gallon''' (adopted 1964 Canada, adopted 1976 UK)
| 6.2288 || 10.0224
| {{sfrac|5|2|3}} || 11 || {{val|0.0002}}
|-
!colspan=8|Historic gallons
|-
| 216 (Roman [[Uncia (unit)|unciae]])|| {{val|3.539605824}}
| Roman [[congius]]
| 8 || 7.8035
| 5 || 11 || 0.01
|-
| 217 || {{val|3.555992888}}
| Irish gallon (1495, re-confirmed 1736)
| 7{{sfrac|209|217}} || 7.8396
| 5.25 || 10 || 0.24
|-
| 224 || {{val|3.670702336}}
| Preserved at the [[Guildhall, London]] (old UK wine gallon)
| 7{{sfrac|5|7}} || 8.0925
| 9 || 3.5 || 0.6
|-
| ≈ 241.3549 || {{val|3.955093289}}
| Jersey gallon (1562)
| 7.1596 || 8.7195
| 6.5 || 7.25 || 0.32
|-
| ≈ 260.3235 || {{val|4.265931799}}
| Guernsey gallon (17th century origins until 1917)
| 6.6379 || 9.4048
| 5 || 13.25 || 0.06
|-
| 264.8 || {{val|4.3392945472}}
| Ancient Rumford quart (1228)
| 6{{sfrac|174|331}} || 9.5665
| 7.5 || 6 || 0.1
|-
| 265.5 || {{val|4.350765492}}
| Exchequer ([[Henry VII of England|Henry VII]], 1497, with rim)
| 6{{sfrac|30|59}} || 9.5918
| 13 || 2 || 0.01
|-
| 266.25 || {{val|4.36305579}}
| Ancient Rumford (1228)
| 6{{sfrac|174|355}} || 9.6189
| 5.5 || 11.25 || 0.39
|-
| 268.4 || {{val|4.398342075}}
| Henry VII (Winchester) corn gallon (1497)
| 6{{sfrac|294|671}} || 9.6966
| 6 || 9.5 || 0.08
|-
| 268.8025 || {{val|4.40488377086}}
| Winchester, statute of 13 & 14 [[William III of England|William III]] <br /> Corn gallon<br /> US dry gallon (no longer used, no longer listed in the relevant statute)
| 6{{sfrac|46074|107521}} || 9.7111
| 18.5 || 1 || {{val|0.00001}}
|-
| 270 || {{val|4.42450728}}
| Elizabeth I corn gallon (1601) 
| 6.4 || 9.7544
| 5 || 13.75 || 0.0072
|-
| 271 || {{val|4.440894344}}
| Exchequer (1601, ''E.'') (old ''corn'' gallon)
| 6{{sfrac|102|271}} || 9.7905
| 4.5 || 17 || 0.23
|-
| 272 || {{val|4.457281408}}
| William III corn gallon (1688)
| 6{{sfrac|6|17}} || 9.8266
| 6 || 9.625 || 0.05
|-
| {{val|277.202578125}} || {{val|4.542536388699375}}
| Statute of 12 Anne (coal gallon), also equal to {{sfrac|1|1|32}} corn gallons
| 6.2337 || 10.0146
| {{sfrac|5|2|3}} || 11 || 0.08
|-
| 277.274 || {{val|4.543706784}} || Imperial gallon, as originally determined in 1824
| 6.2321 || 10.0172
| {{sfrac|5|2|3}} || 11 || 0.05
|-
| ≈ 277.4195 || {{val|4.546091879}}
| Imperial gallon as re-determined in 1895 and defined in 1963
| 6.2288 || 10.0224
| {{sfrac|5|2|3}} || 11 || {{val|0.0001}}
|-
| ≈ 277.463 || {{val|4.54680939}}
| Imperial gallon as defined by Order in Council of 28 November 1889
| 6.2279 || 10.024
| {{sfrac|5|2|3}} || 11 || 0.015
|-
| 278 || {{val|4.555603792}}
| Exchequer (Henry VII, with copper rim)
| 6{{sfrac|30|139}} || 10.0434
| 4.5 || 17.5 || 0.12
|-
| 278.4 || {{val|4.562158618}}
| Exchequer (1601 and 1602 pints)
| 6{{sfrac|6|29}} || 10.0578
| 7 || 7.25 || 0.22
|-
| 280 || {{val|4.58837792}}
| Exchequer (1601 quart)
| 6{{sfrac|6|35}} || 10.1156
| 5 || 14.25 || 0.07
|-
| 282 || {{val|4.621152048}}
| Treasury (beer and ale gallon pre-1824)
| 6{{sfrac|6|47}} || 10.1879
| 6.5 || 8.5 || 0.02
|}