Why doesn’t the U.S. use the Metric System? Pirates. In the late 1700s, the U.S. had no standardized system—each state used ...

Objects can be measured in different units, depending on their size. It is important to know the conversions between metric units. When you are converting one type of unit to another you need to ...

And Canadians do this all the time. Most of the world uses the metric system. The Americans use imperial. And then Canada uses an unholy amalgam of both. It’s one of our weirdest national traits ...