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  2. United States customary units - Wikipedia

    en.wikipedia.org/wiki/United_States_customary_units

    The teaspoon, tablespoon, and cup are defined in terms of a fluid ounce as 1 ⁄ 6, 1 ⁄ 2, and 8 fluid ounces respectively. The fluid ounce derives its name originally from being the volume of one ounce avoirdupois of water, [citation needed] but in the US it is defined as 1 ⁄ 128 of a US gallon. Consequently, a fluid ounce of water weighs ...

  3. Ounce - Wikipedia

    en.wikipedia.org/wiki/Ounce

    An imperial fluid ounce is defined in British law as 28.4130625 millilitres, a US customary fluid ounce is 29.57353 mL, and a US food labelling fluid ounce is 30 mL. The fluid ounce is sometimes referred to simply as an "ounce" in contexts where its use is implicit, such as bartending. Other uses Fabric weight. Ounces are also used to express ...

  4. Comparison of the imperial and US customary measurement ...

    en.wikipedia.org/wiki/Comparison_of_the_imperial...

    Both the imperial and US fluid gallon are divided into 4 quarts, 8 pints or 32 gills. [d] However, whereas the US gill is divided into four US fluid ounces, the imperial gill is divided into five imperial fluid ounces. So whilst the imperial gallon, quart, pint and gill are about 20% larger than are their US fluid measure counterparts, the ...

  5. Fluid ounce - Wikipedia

    en.wikipedia.org/wiki/Fluid_ounce

    A fluid ounce (abbreviated fl oz, fl. oz. or oz. fl., old forms ℥, fl ℥, f℥, ƒ ℥) is a unit of volume (also called capacity) typically used for measuring liquids. The British Imperial , the United States customary , and the United States food labeling fluid ounce are the three that are still in common use, although various definitions ...

  6. Imperial and US customary measurement systems - Wikipedia

    en.wikipedia.org/wiki/Imperial_and_US_customary...

    The apothecaries and troy pounds are divided into 12 ounces (of 480 grains) while the avoirdupois pound has 16 ounces (of 437.5 grains). The unit of volume, the gallon, has different values in the United States and in the United Kingdom – the US fluid gallon being about 0.83 imperial gallons and the US dry gallon being about 0.97 imperial ...

  7. Imperial units - Wikipedia

    en.wikipedia.org/wiki/Imperial_units

    A dram is 1 ⁄ 16 of an ounce ounce (oz) 1 ⁄ 16: 28.349 523 125 g: An ounce is 1 ⁄ 16 of a pound pound (lb) 1 0.453 592 37 kg: Defined by the Units of Measurement Regulations 1994 (SI 1994/2867) stone (st) 14 6.350 293 18 kg: The plural stone is often used when providing a weight (e.g. "this sack weighs 8 stone").

  8. Gram - Wikipedia

    en.wikipedia.org/wiki/Gram

    U.S. customary. 0.0352740 ounces. Atomic mass units. 6.022 140 76 × 1023 Da. The gram (originally gramme; [1] SI unit symbol g) is a unit of mass in the International System of Units (SI) equal to one thousandth of a kilogram . Originally defined as of 1795 as "the absolute weight of a volume of pure water equal to the cube of the hundredth ...

  9. System of units of measurement - Wikipedia

    en.wikipedia.org/wiki/System_of_units_of_measurement

    The troy ounce is the only unit of the system in current use; it is used for precious metals. Although the troy ounce is larger than its avoirdupois equivalent, the pound is smaller. The obsolete troy pound was divided into 12 ounces, rather than the 16 ounces per pound of the avoirdupois system.