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United States customary units form a system of measurement units commonly used in the United States and most U.S. territories, [1] since being standardized and adopted in 1832. [2] The United States customary system developed from English units that were in use in the British Empire before the U.S. became an independent country.
The imperial and US customary measurement systems are both derived from an earlier English system of measurement which in turn can be traced back to Ancient Roman units of measurement, and Carolingian and Saxon units of measure. The US Customary system of units was developed and used in the United States after the American Revolution, based on ...
cup (US customary) c (US) ≡ 8 US fl oz ≡ 1 ⁄ 16 gal (US) = 236.588 2365 × 10 −6 m 3: cup (US food nutrition labeling) c (US) ≡ 240 mL [18] = 2.4 × 10 −4 m 3: dash (imperial) ≡ 1 ⁄ 192 gi (imp) = 1/8 tsp (imp) = 739.923 502 604 1 6 × 10 −9 m 3: dash (US) ≡ 1 ⁄ 48 US fl oz = 1/8 US tsp = 616.115 199 218 75 × 10 −9 m 3 ...
Volume may be measured either in terms of units of cubic length or with specific volume units. The units of cubic length (the cubic inch, cubic foot, cubic mile, etc.) are the same in the imperial and US customary systems, but they differ in their specific units of volume (the bushel, gallon, fluid ounce, etc.).
Pages in category "Customary units of measurement in the United States" The following 98 pages are in this category, out of 98 total. This list may not reflect recent changes .
US customary liquid measure: US barrel: USbbl US bbl 31½ US gal used for liquids except for oil and beer (see the full list) 1.0 US bbl (120 L; 32 US gal; 26 imp gal) U.S.bbl U.S. bbl barrel: oilbbl bbl 42 US gal 1.0 bbl (0.16 m 3) US beer barrel: USbeerbbl (usbeerbbl) US bbl 1.0 US bbl (120 L; 31 US gal; 26 imp gal) U.S.beerbbl
The chain is the unit of linear measurement for the survey of the public lands as prescribed by law. All returns of measurement in the rectangular system are made in the true horizontal distance in links, chains, and miles. The only exceptions to this rule are special requirements for measurement in feet in mineral surveys and townsite surveys ...
A chart of Imperial and United States customary units. The barleycorn is an English unit of length [1] equal to 1 ⁄ 3 of an inch (i.e. about 8.47 mm). It is still used as the basis of shoe sizes in English-speaking countries.