December 23, 2025, marks the 50th anniversary of the Metric Conversion Act, designed to bring US weights and measures in line with the rest of the world. The United States is one of the last holdouts ...

May is a month full of celebrations—everything from May Day and Cinco de Mayo to Mother’s Day and Memorial Day. Largely forgotten in the cornucopia of May celebrations, however, is National Metric ...

Ever wondered what happened to our country’s conversion to the metric system? I did too. So, I did some digging and turned up some dead bodies in the process. Advertisement Article continues below ...

Canadians measure their height in feet and inches but record distances in kilometers, express the air temperature in degrees ...

Atlas Obscura on Slate is a blog about the world’s hidden wonders. Like us on Facebook and Tumblr, or follow us on Twitter. For better or worse, the United States remains one of only three countries ...

Walter Block argues that “Canadians Hate the Metric System” imposed on them in 1975 (op-ed, Sept. 16). In the same year, reacting to the Metric Conversion Act, Americans resisted metrics. For example, ...

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 ...

As president of the U.S. Metric Association, Donald Hillger would like to think that his non-profit advocacy group had something to do with presidential candidate Lincoln Chafee's call for America to ...

The U.S. Metric Program may be the loneliest office in Washington. Located about 30 minutes from the White House, its headquarters is in the much larger—and better funded—“measurement standards ...

In a presidential campaign turning largely on stagnant incomes and national security, Lincoln Chafee announced his bid for the White House on Wednesday with an unusual policy stance: He called for ...