The imperial pint is a unit of volume in the imperial unit system with the symbol pt.
1 imperial pint is equal to 1/8 of an imperial gallon. This is equal to 1/2 imperial quart, 4 imperial gills or 20 imperial fluid ounces. In SI / metric this equates to 568.26125 ml.
In Britain, all beer, ales and stout must be served in pubs by the pint (or half pint). Every single glass, despite being a 'pint' must have the numbers 568 ml printed on the side - and because of this, is likely the most commonly known conversion factor amongst the British population.
The cubic metre (or cubic meter; US spelling) is a unit of volume and is derived from an SI unit with the symbol m³.
1 cubic metre is exactly 1000 litres. It is also ≈ 6.29 barrels, ≈ 220 imperial gallons and ≈ 35.3 cubic feet.
1 cubic metre of water in normal conditions (≈4 °C) weighs exactly 1000 kg (or 1 tonne).)
The cubic metre is the unit used to measure water usage and often water bills are broken down into how many m³ has passed through the property / business.