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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.
Conversions between units in the metric system are defined by their prefixes (for example, 1 kilogram = 1000 grams, 1 milligram = 0.001 grams) and are thus not listed in this article. Exceptions are made if the unit is commonly known by another name (for example, 1 micron = 10 −6 metre).
[7] [8] A US liquid gallon can contain about 3.785 kilograms or 8.34 pounds of water at 3.98 °C (39.16 °F), and is about 16.7% less than the imperial gallon. There are four quarts in a gallon, two pints in a quart and 16 US fluid ounces in a US pint, which makes the US fluid ounce equal to 1 / 128 of a US gallon.
1/4 imp gal or 40 imp fl oz 1.0 imp qt (1,100 ml; 38 US fl oz) imperial pint: imppt imp pt 1/8 imp gal or 20 imp fl oz 1.0 imp pt (0.57 L) imperial fluid ounce: impoz (impfloz) imp fl oz 1/160 imp gal 1.0 imp fl oz (28 ml; 0.96 US fl oz) impoz USoz; impoz U.S.oz; impoz ml; impoz mL; US customary liquid measure: US barrel: USbbl US bbl
Hence 1 L ≡ 0.001 m 3 ≡ 1000 cm 3; and 1 m 3 (i.e. a cubic metre, which is the SI unit for volume) is exactly 1000 L. From 1901 to 1964, the litre was defined as the volume of one kilogram of pure water at maximum density (+3.98 °C) [ citation needed ] and standard pressure .
The factor–label method can convert only unit quantities for which the units are in a linear relationship intersecting at 0 (ratio scale in Stevens's typology). Most conversions fit this paradigm. An example for which it cannot be used is the conversion between the Celsius scale and the Kelvin scale (or the Fahrenheit scale). Between degrees ...
Ml Ml US spelling: megaliter: 1.0 Ml (35 × 10 ^ 3 cu ft) ML ML kilolitre: kl kl US spelling: kiloliter one cubic metre 1.0 kl (35 cu ft) kL kL hectolitre: hl hl US spelling: hectoliter: 1.0 hl (22 imp gal; 26 US gal) hL hL decalitre: dal dal US spelling: dekaliter: 1.0 dal (2.2 imp gal; 2.6 US gal) daL daL litre: l L US spelling: liter
An imperial fluid ounce is 1 ⁄ 20 of an imperial pint, 1 ⁄ 160 of an imperial gallon or exactly 28.4130625 mL. A US customary fluid ounce is 1 ⁄ 16 of a US liquid pint and 1 ⁄ 128 of a US liquid gallon or exactly 29.5735295625 mL, making it about 4.08% larger than the imperial fluid ounce. A US food labeling fluid ounce is exactly 30 mL.