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{{Short description|Unit of volume with different values}}{{Other uses}}{{Distinguish|cord (unit)}}{{redirect|Quarts|the mineral|Quartz}}{{Use dmy dates|date=August 2019}}{{Use American English|date=June 2017}}

factoids

| units_imp2 = US customary units1usqtdisp=out}}| units_imp3 = US customary units1in3disp=out}}| units_us1 = SI-compatible units1Ldisp=out}}| units_us2 = Imperial units1impqtdisp=out}}| units_us3 = Imperial units1in3disp=out}}| units_us4 = US dry gallon1usdryqtdisp=out}}}}The quart (symbol: qt)BOOK, BS350:Part 1:1974 Conversion factors and tables Part 1. Basis of tables. Conversion factors, 1974, British Standards Institution, 10, 86, is a unit of volume equal to a quarter of a gallon. Three kinds of quarts are currently used: the liquid quart and dry quart of the US customary system and the {{nowrap|imperial quart}} of the British imperial system. All are roughly equal to one liter. It is divided into two pints or (in the US) four cups. Historically, the exact size of the quart has varied with the different values of gallons over time and in reference to different commodities.{{anchor|Etymology}}

Name

The term comes from the Latin (meaning one-quarter) via the French . However, although the French word has the same root, it frequently means something entirely different. In Canadian French in particular, the quart is called , whilst the pint is called .

History

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

Definitions and equivalencies

{{anchor|United States liquid quart}}

US liquid quart

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 exactly equal to 0.9144 meters. From this definition is derived the metric equivalencies for inches, feet, and miles, area measures, and measures of volume. The US liquid quart equals 57.75 cubic inches, which is exactly equal to {{val|0.946352946|u=liters}}."Authorized tables" {{Webarchive|url=https://web.archive.org/web/20200823093359weblink |date=23 August 2020 }}, United States Code, Title 15, ch. 6, subchapter I, sec. 205, accessed 19 July 2008.{|cat|={{frac4}}US liquid gallons|=2US liquid pints|=4US liquid cups|=8US liquid gills|=32US fluid ounces|=57.75 cubic inchesOne US liquid gallon is defined as 231 cubic inches.|≡{{valGuide for the Use of the International System of Units (SI) {{Webarchive>url=https://web.archive.org/web/20160603203340weblink |date=3 June 2016 }}—US government publicationThis has been the exact conversion since the 1964 redefinition of the liter and the 1959 redefinition of the inch.|≈33.307imperial fluid ounces

US dry quart

In the United States, the dry quart is equal to one quarter of a US dry gallon, or exactly {{val|1.101220942715|u=liters}}.{||={{frac32}}US bushels|={{frac8}}US pecks|={{frac4}}US dry gallons|=2US dry pints|={{val|cubic inches|≡{{val|liters|≈38.758imperial fluid ounces

Imperial quart

The imperial quart, which is used for both liquid and dry capacity, is equal to one quarter of an imperial gallon, or exactly 1.1365225 liters. In the United Kingdom goods may be sold by the quart if the equivalent metric measure is also given.WEB,weblink Weights and Measures Act 1985, Section 8, Government of the United Kingdom, 15 November 2019, 18 November 2019,weblink" title="web.archive.org/web/20191118022519weblink">weblink live, {||={{frac4}}imperial gallons|=2imperial pints|=40imperial fluid ounces|≡{{valpath=uksi/1995/1804asmade=yesThis has been the exact conversion since the redefinition of the imperial gallon in 1976 in the UK, and in 1964 in Canada.}} |≈69.355cubic inches|≈38.430US fluid ouncesIn Canadian French, by federal law, the imperial quart is called .WEB,weblink Measurement Canada, 1 October 2012, 10 August 2017,weblink" title="web.archive.org/web/20170810172405weblink">weblink live, WEB,weblink Mesures Canada, 1 October 2012, 20 January 2018,weblink" title="web.archive.org/web/20180120070033weblink">weblink live,

Winchester quart

The Winchester quart is an archaic measure,Trading Standards – Weights and Measures of the City of Winchester {{webarchive |url=https://web.archive.org/web/20090122070517weblink |date=22 January 2009 }} roughly equal to 2 imperial quarts or 2.25 liters. The 2.5{{nbsp}}L bottles in which laboratory chemicals are supplied are sometimes referred to as Winchester quart bottles, although they contain slightly more than a traditional Winchester quart.

Reputed quart

The reputed quart was a measure equal to two-thirds of an imperial quart (or one-sixth of an imperial gallon), at about 0.7577{{nbsp}}liters, which is very close to one US fifth (0.757 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.BOOK, Oxford English Dictionary,weblink 24 December 2014, Reputed, adj. (b), 24 September 2015,weblink" title="web.archive.org/web/20150924085514weblink">weblink live, WEB, Reputed quart,weblink Sizes – The Online Quantinary, 24 December 2014, 26 September 2015,weblink" title="web.archive.org/web/20150926141342weblink">weblink live,

Notes

{{Notelist}}

References

{{Reflist}}

External links

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

{{Imperial units}}{{United States Customary Units}}