Pint (Ontario), about 1 litre versus 0.5 litres. After four of the British provinces united in the Canadian Confederation in 1867, Canada legally adopted the British imperial system of measure in 1873, making Canadian liquid units incompatible with American ones from that year forward. In 1873, the French Canadian "pinte" was defined as being one imperial quart or two imperial pints, while the imperial pint was legally called a "chopine" in French Canada. Canadian imperial units of liquid measure remain incompatible with American traditional units to this day, and although the Canadian pint, quart, and gallon are still legal units of
Pint in two sizes, colloquially known as "quarts" and "pints". They were 22 and 12 imperial ounces (625 and 341 ml), respectively, which were much smaller than the British units. Some provinces banned the sale of beer in the larger bottle. For example, in Ontario in the 1950s only the smaller size could be sold, but in Quebec both sizes were about equally common. The numerous incompatibilities between traditional Canadian, British, French, and American unit systems was one of the driving forces behind metrication in Canada. Draft beer in Canada, when advertised as a "pint", is legally required to be 568