A wine gallon is a unit of capacity that was used routinely in England as far back as the 14th century, and by statute under Queen Anne since 1707.[1][2] Britain abandoned the wine gallon in 1826 when it adopted imperial units for measurement. The 1707 wine gallon is the basis of the United States' gallon, as well as other measures.[3]

The Imperial gallon was defined with yet another set of temperature and pressure values (62 °F (17 °C) and 30.0 inHg (102 kPa)).

To convert a number of wine gallons to the equivalent number of Imperial gallons, multiply by 0.833111. To convert a number of Imperial gallons to the equivalent number of wine gallons, multiply by 1.200320.

Some research concludes that the wine gallon was originally meant to hold 8 troy pounds of wine.[3] The 1707 British statute defines the wine gallon as 231 cubic inches (3,790 cm3) – e.g. a cylinder 7 inches (178 mm) in diameter and 6 inches (152 mm) high,[nb 1] c. 3.785 litre – and was used to measure the volume of wine and other commercial liquids such as cooking oils and honey.[4] A 14th-century barrel of wine contained 31.5 US gal (119 L; 26.2 imp gal), which equals one-eighth of the tun of 252 US gallons (954 L; 210 imp gal).

See also

Notes

  1. ↑ π was often approximated 3+1⁄7 at the time.

References

  1. ↑ "Wine Gallon". Sizes.com. Retrieved 6 September 2016.
  2. ↑ "The Carysfort Committee & the Wine Gallon, 1758" (PDF). Retrieved 6 September 2016.
  3. 1 2 Rowlett, Russ (September 13, 2001). "Gallon". How Many? A Dictionary of Units of Measurement. University of North Carolina at Chapel Hill. Retrieved 2020-01-16.
  4. ↑ "wine barrel". Sizes.com. 2009-02-02. Retrieved 2010-07-29.
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