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Symbol | Definition |
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≡ | exactly equal |
≈ | approximately equal to |
= | equal to |
digits | indicates that digits repeat infinitely (e.g. 8.294 369 corresponds to 8.294 369 369 369 369 …) |
The cup currently used in the United States for nutrition labelling is defined in United States law as 240 ml.
1 U.S. "legal" cup | = | 240 | millilitres |
= | 16 | international tablespoons | |
= | 12 | Australian tablespoons | |
≈ | 8.12 | U.S. customary fluid ounces | |
≈ | 8.45 | imperial fluid ounces |
The imperial (UK) gallon, now defined as exactly 4.54609 litres (about 277.42 cubic inches), is used in some Commonwealth countries and was originally based on the volume of 10 pounds (approximately 4.54 kg) of water at 62 °F (17 °C). The imperial fluid ounce is defined as 1⁄160 of an imperial gallon; there are four quarts in a gallon, two pints in a quart, and 20 Imperial fluid ounces in an imperial pint.