Quart#United States liquid quart

The term comes from the Latin {{lang|la|quartus}} (meaning one-quarter) via the French {{lang|fr|quart}}. However, although the French word {{lang|fr|quart}} has the same root, it frequently means something entirely different. In Canadian French in particular, the quart is called {{lang|fr|pinte}}, while the pint is called {{lang|fr|chopine}}.

{{main|Gallon}}

Since gallons of various sizes have historically been in use, the corresponding quarts have also existed with various sizes.

The imperial quart is equal to one-quarter of an imperial gallon of exactly {{val|4.54609|u=liters}}, i.e. {{val|1.1365225|u=liters}}. In the United Kingdom, goods may be sold by the quart if the equivalent metric measure is also given.{{cite web| url = http://www.legislation.gov.uk/ukpga/1985/72/section/8| title = Weights and Measures Act 1985, Section 8| publisher = Government of the United Kingdom| access-date = 15 November 2019| archive-date = 18 November 2019| archive-url = https://web.archive.org/web/20191118022519/http://www.legislation.gov.uk/ukpga/1985/72/section/8| url-status = live}}

In Canadian French, by federal law, the imperial quart is called {{lang|fr|pinte}}.{{Cite web |url=http://www.ic.gc.ca/eic/site/mc-mc.nsf/eng/home |title=Measurement Canada |access-date=1 October 2012 |archive-date=10 August 2017 |archive-url=https://web.archive.org/web/20170810172405/http://www.ic.gc.ca/eic/site/mc-mc.nsf/eng/Home |url-status=live }}{{Cite web |url=http://www.ic.gc.ca/eic/site/mc-mc.nsf/fra/accueil |title=Mesures Canada |access-date=1 October 2012 |archive-date=20 January 2018 |archive-url=https://web.archive.org/web/20180120070033/http://www.ic.gc.ca/eic/site/mc-mc.nsf/fra/accueil |url-status=live }}

In the United States, traditional length and volume measures have been legally standardized for commerce by the international yard and pound agreement of 1959, using the definition of 1 yard being 0.9144 meters: from this definition the metric equivalents for inches, feet, miles, area measures, and measures of volume are determined. The US liquid quart is equal to one-quarter of a gallon of exactly 231 cubic inches, i.e. 57.75 cubic inches or {{val|0.946352946|u=liters}}.[https://www.law.cornell.edu/uscode/text/15/205- "Authorized tables"] {{Webarchive|url=https://web.archive.org/web/20200823093359/https://www.law.cornell.edu/uscode/text/15/205 |date=23 August 2020 }}, United States Code, Title 15, ch. 6, subchapter I, sec. 205, accessed 19 July 2008.

In the United States, the dry quart is equal to {{sfrac|1|32}} of a US bushel of exactly 2150.42 cubic inches, i.e. 67.200625 cubic inches or {{val|1.101220942715|u=liters}}.

The Winchester quart is an obsolescent measure:[http://www.hants.gov.uk/regulatory/tradingstandards/wmhistory.html Trading Standards – Weights and Measures of the City of Winchester] {{webarchive |url=https://web.archive.org/web/20090122070517/http://www.hants.gov.uk/regulatory/tradingstandards/wmhistory.html |date=22 January 2009 }} it was originally equal to two imperial quarts (half of an imperial gallon) or exactly {{val|2.273045|u=litres}}, but was later metricated to {{val|2.5|u=litres}} (2.2 imperial quarts). Despite its name, it is unrelated to the Winchester measure.{{Cite web |title=Units: W |url=https://www.ibiblio.org/units/dictW.html |access-date=2025-02-18 |website=www.ibiblio.org}}

The 2.5{{nbsp}}L bottles in which laboratory chemicals are supplied are sometimes referred to as Winchester quart bottles, although these contain 10% more than a traditional Winchester quart.

The reputed quart was a measure equal to two-thirds of an imperial quart (one-sixth of an imperial gallon), or exactly 0.757681{{overline|6}} liters, which is only 0.08% larger than one US fifth (exactly 0.7570823568 liters).

The reputed quart was previously recognized as a standard size of wine bottle in the United Kingdom, and is only about 1% larger than the current standard wine bottle of 0.75{{nbsp}}L.{{cite book|title=Oxford English Dictionary|url=http://www.oed.com/view/Entry/163235?redirectedFrom=reputed+quart#eid25894027|access-date=24 December 2014|chapter=Reputed, adj. (b)|archive-date=24 September 2015|archive-url=https://web.archive.org/web/20150924085514/http://www.oed.com/view/Entry/163235?redirectedFrom=reputed+quart#eid25894027|url-status=live}}{{cite web|title=Reputed quart|url=http://sizes.com/units/quart_reputed.htm|publisher=Sizes – The Online Quantinary|access-date=24 December 2014|archive-date=26 September 2015|archive-url=https://web.archive.org/web/20150926141342/http://sizes.com/units/quart_reputed.htm|url-status=live}}

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• {{Wiktionary-inline|quart}}
• {{Commons category-inline}}

{{Imperial units}}

{{United States Customary Units}}

Category:Alcohol measurement

Category:Cooking weights and measures

Category:Customary units of measurement in the United States

Category:Imperial units

Category:Units of volume