Pint a limited extent in Commonwealth nations. In the United States, two pints are used: a liquid pint (≈ 473 ml) and a less-common dry pint (≈ 551 ml). Each of these pints is one-eighth of its respective gallon, but the gallons differ. This difference dates back to 1824, when the British Weights and Measures Act standardised various liquid measures throughout the British Empire, while the United States continued to use the earlier English measure. The imperial pint consists of 20 imperial fluid ounces and the US liquid pint is 16 US fluid ounces, making the imperial fluid ounce about 4%
Pint fluid pint of water weighs about a pound (16 ounces), resulting in the popular saying, "A pint's a pound, the world around." However, a US pint of water weighs 1.04375 pounds and the statement does not hold the world around because the imperial (UK) pint, which was also the standard measure in Australia, India, Malaya, New Zealand, South Africa, etc., weighs 1.25 pounds. A different saying for the imperial pint is "a pint of water's a pound and a quarter". The pint is traditionally one-eighth of a gallon. In the Latin of the apothecaries' system, "octavius" or "octarius" (plural "octavii"