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The cup is a cooking measure of volume, commonly associated with cooking and serving sizes.In the US, it is traditionally equal to one-half US pint (236.6 ml). Because actual drinking cups may differ greatly from the size of this unit, standard measuring cups may be used, with a metric cup commonly being rounded up to 240 millilitres (legal cup), but 250 ml is also used depending on the ...
The fluid ounce is distinct from the (international avoirdupois) ounce as a unit of weight or mass, although it is sometimes referred to simply as an "ounce" where context makes the meaning clear (e.g., "ounces in a bottle"). A volume of pure water measuring one imperial fluid ounce has a mass of almost exactly one ounce.
Thirty years later in 1824, the imperial gallon was defined to be the volume occupied by ten pounds of water at 17 °C (62 °F). [5]: 394 This definition was further refined until the United Kingdom's Weights and Measures Act 1985, which makes 1 imperial gallon precisely equal to 4.54609 litres with no use of water. [11]
1 ⁄ 16 cup 1 ⁄ 2: 14.7868 2 tablespoons = 1 fluid ounce fluid ounce: fl.oz. or oz. 1 ⁄ 8 cup 1 29.5735 2 fluid ounce = 1 wineglass wineglass‡ wgf. 1 ⁄ 4 cup 2 59.1471 2 wineglasses = 1 teacup gill‡ or teacup‡ tcf. 1 ⁄ 2 cup 4 118.294 2 teacups = 1 cup cup: C 1 ⁄ 2 pint 8 236.588 2 cups = 1 pint pint: pt. 1 ⁄ 2 qt 16 473.176 ...
[e] One avoirdupois ounce of water has an approximate volume of one imperial fluid ounce at 62 °F (16.67 °C). [f] This convenient fluid-ounce-to-avoirdupois-ounce relation does not exist in the US system. One noticeable comparison between the imperial system and the US system is between some Canadian and American beer bottles.
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, [21] but in the US it is defined as 1 ⁄ 128 of a US gallon. Consequently, a fluid ounce of water weighs about 1.041 ...
The Winchester quart is an archaic measure, [10] equal to 1 ⁄ 16 of a Winchester bushel: this is equal to 134.40126 cubic inches or 1.9378781 imperial quarts or 2.2024420 litres. The 2.5 L bottles in which laboratory chemicals are supplied are sometimes referred to as Winchester quart bottles , although these contain 13.5% more than a ...
One litre of water has a mass of almost exactly one kilogram when measured at its maximal density, which occurs at about 4 °C. It follows, therefore, that 1000th of a litre, known as one millilitre (1 mL), of water has a mass of about 1 g; 1000 litres of water has a mass of about 1000 kg (1 tonne or megagram). This relationship holds because ...