The puncheon was a British unit for beer, wines and spirits. It was also an American unit of capacity for wine.
Historically, the puncheon has been defined somewhere between 70 and 120 imperial gallons (318 and 546 litres; 84.1 and 144 US gallons).
The US puncheon for wine is defined as 84 US gallons (318 litres).
| gallon | rundlet | barrel | tierce | hogshead | puncheon, tertian | pipe, butt | tun | |
|---|---|---|---|---|---|---|---|---|
| 1 | tun | |||||||
| 1 | 2 | pipes, butts | ||||||
| 1 | 1+1⁄2 | 3 | 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 (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 |