US Gallons to Hogsheads (ale) (gal to hhd (ale))

1 US gallon equals 0.01541989231 hogsheads (ale) (rounded).

1 US gallon = 0.01541989231 hogsheads (ale)

How to convert US gallons to hogsheads (ale)

To convert US gallons to hogsheads (ale), multiply the number of US gallons by 0.01541989231. The factor is rounded to 10 significant digits. To go the other way, multiply hogsheads (ale) by 64.85129598 (rounded).

hogsheads (ale) = US gallons × 0.01541989231

Example: 10 US gallons = 0.1541989231 hogsheads (ale).

Pints, quarts, gallons and fluid ounces differ between the US and the UK. Units are labeled 'US' or 'imperial' to avoid confusion.

About these units

US Gallon (gal)

US customaryCurrent unit

Exactly 231 cubic inches or 3.785411784 liters (128 US fluid ounces). About 17% smaller than the imperial gallon.

The US gallon is a survivor of English wine trade. Around 1706, a statute in Queen Anne's reign fixed the wine gallon at exactly 231 cubic inches, settling confusion among the competing gallons for wine, ale and corn. British colonies in North America used that wine gallon, and in 1824 Britain replaced all its gallons with a new imperial one while the United States kept the old measure. It was adopted as the legal US standard in 1836 and is still defined as exactly 231 cubic inches, or 3.785411784 liters.

That makes the US gallon about 17 percent smaller than the imperial gallon, a difference that explains why American and British fuel-economy figures cannot be compared directly. Everyday uses are milk jugs, paint cans and gasoline pumps. One gallon divides evenly into four quarts, eight pints, sixteen cups and 128 fluid ounces. A gallon of water weighs a little over 8 pounds, an easy figure to remember when loading a car with water jugs.

1 US gallon = 3.785411784 liters (exactly).

Sources: Wikipedia: Gallon; NIST SP 811, Appendix B.8: conversion factors for volume

Hogshead (ale) (hhd (ale))

Imperial (British)Historical unit (no longer in standard use)

54 imperial gallons (245.5 L), one and a half UK beer barrels.

Philologists such as Walter William Skeat traced hogshead to Germanic words for a cask, for example Dutch oxhooft and Danish oxehoved, meaning ox head; the older English form was probably oxhead. Parliament first tried to standardise the cask in an act of 1423, but sizes still varied by place and by what was inside.

For ale, Wikipedia gives two figures. Under the pre-1824 beer gallon the ale hogshead is listed as 45 imperial gallons, while its chart for the 1824 system gives 54 imperial gallons, 245.5 liters, one and a half barrels. The latter is the figure used here. Other goods differed: wine hogsheads settled at 52.5 imperial gallons (238.7 L), and in 1897 Whitaker's Almanack listed 46 gallons for claret, 57 for port and 54 for sherry. Colonial sugar and tobacco hogsheads were measured by weight instead. The ale hogshead has long fallen out of use.

1 hogshead (ale) = 245.48886 liters (exactly).

Sources: Wikipedia: Hogshead; Wikipedia: Kilderkin; Wikipedia: Barrel (unit)

Related conversions

See all volume units.