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 16 ounce American traditional pint. Under the Canada Weights and Measures Act, if asked for a "pint of beer", businesses should serve customers 0.568 litres of beer with an accuracy of 0.5%, and if asked for a "pinte de bière" they should serve them 1.136 litres. The Imperial system of measurement is no longer taught in Canadian schools, which leads to confusion when customers ask how big a drinking establishment's pints are. Servers and even managers may not know. To avoid legal issues, many drinking establishments are moving away from using the term "pint" and are selling "glasses" or "sleeves"