The United States's version of the Imperial system is based on an older British version. MaxPixel At press time, only three of the world's countries don't use the metric system: the United States, ...

So much for American exceptionalism: Democratic presidential candidate Lincoln Chafee used his campaign announcement Wednesday to urge the U.S. to switch to the metric system of weights and measures. ...

America’s reluctance to convert to the metric system was once famously lampooned by television’s longest-running animated sitcom, "The Simpsons," in an episode from way back in the Nineties. During a ...

The United States is one of just three countries that "prefers" imperial measurements over the international metric standard. The motivation why has less to do with official policy than you might ...