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The table of imperial avoirdupois mass is the same as the United States table up to one pound, but above that point, the tables differ. The imperial system has a hundredweight, defined as eight stone of 14 lb each, or 112 lb ( 50.802 345 44 kg ), whereas a US hundredweight is 100 lb ( 45.359 237 kg ).
In the following tables in this and subsequent ... as opposed to British 1824 definition of 1 imperial gallon (4.5 L; 1.2 US gal) ... The conversion formula is ...
Metric prefixes; Text Symbol Factor or; yotta Y 10 24: 1 000 000 000 000 000 000 000 000: zetta Z 10 21: 1 000 000 000 000 000 000 000: exa E 10 18: 1 000 000 000 000 000 000: peta P 10 15: 1 000 000 000 000 000: tera T
In the standard system the conversion is that 1 gallon = 231 cubic inches and 1 inch = 2.54 cm, which makes a gallon = 3785.411784 millilitres exactly. For nutritional labeling on food packages in the US, the teaspoon is defined as exactly 5 ml, [22] giving 1 gallon = 3840 ml exactly. This chart uses the former.
The US fluid ounce is based on the US gallon, which in turn is based on the wine gallon of 231 cubic inches that was used in the United Kingdom prior to 1824. With the adoption of the international inch, the US fluid ounce became 1 ⁄ 128 gal × 231 in 3 /gal × (2.54 cm/in) 3 = 29.5735295625 mL exactly, or about 4% larger than the imperial unit.
The litre (Commonwealth spelling) or liter (American spelling) (SI symbols L and l, [1] other symbol used: ℓ) is a metric unit of volume. It is equal to 1 cubic decimetre (dm 3 ), 1000 cubic centimetres (cm 3 ) or 0.001 cubic metres (m 3 ).
The 1707 British statute defines the wine gallon as 231 cubic inches (3,790 cm 3) – 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 ...
US gallon: USgal US gal 231 cubic inches by definition, also 4 US qt or 8 US pt or 128 US fl oz Allows triple output units. See: full list. 1.0 US gal (3.8 L; 0.83 imp gal) USgal l; USgal L; USgal impgal; U.S.gal U.S. gal USgal l; USgal L; USgal impgal; US quart: USqt US qt 1/4 US gal or 32 US fl oz 1.0 US qt (950 ml) U.S.qt U.S. qt US pint ...