Below is a list of old English units for wine casks. In addition to the items listed below see separate articles on Gallon, Barrel, Hogshead, Firkin, Puncheon, Butt and Tun.
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The rundlet is an archaic unit-like size of wine casks once used in Britain. It was equivalent to about 68 litres. It used to be defined as 18 wine gallons—one of several gallons then in use—before the adoption of the imperial system in 1824, afterwards it was 15 imperial gallons, which became the universal English base unit of volume in the British realm.
The tierce is an old English unit of wine casks, holding about 159 litres. From 1824 on it was defined by English law to be 35 imperial gallons, before that (and still in the USA) it was 42 wine gallons—the difference being less than a tenth of a percent. It is closely related to the modern petrol barrel.
| gallon | rundlet | barrel | tierce | hogshead | firkin, puncheon, tertian | pipe, butt | tun | |
|---|---|---|---|---|---|---|---|---|
| 1 | tun | |||||||
| 1 | 2 | pipes, butts | ||||||
| 1 | 1 1⁄2 | 3 | firkins, puncheons, tertians | |||||
| 1 | 1 1⁄3 | 2 | 4 | hogsheads | ||||
| 1 | 1 1⁄2 | 2 | 3 | 6 | tierces | |||
| 1 | 1 1⁄3 | 2 | 2 2⁄3 | 4 | 8 | barrels | ||
| 1 | 1 3⁄4 | 2 1⁄3 | 3 1⁄2 | 4 2⁄3 | 7 | 14 | rundlets | |
| 1 | 18 | 31 1⁄2 | 42 | 63 | 84 | 126 | 252 | gallons (US/wine) |
| 3.785 | 68.14 | 119.24 | 158.99 | 238.48 | 317.97 | 476.96 | 953.92 | litres |
| 1 | 15 | 26 1⁄4 | 35 | 52 1⁄2 | 70 | 105 | 210 | gallons (imperial) |
| 4.546 | 68.19 | 119.3 | 159.1 | 238.7 | 318.2 | 477.3 | 954.7 | litres |
English units of brewery casks