8 ounces in a cup, 12 inches in a foot, 3 feet in a yard,16 ounces in a pound, 4 quarts in a gallon,43,560 square feet in an acre What a Number Stew! The US is the outlier. The other 95% + of the world use the metric system. Canada established a Metric commission in 1971 and over Labor Day weekend in 1977 every speed limit sign in the country was changed from MPH to KPH. US Metric History 1968 . . .