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 ...

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 ...

Have you ever noticed that systems of measurement tends to change when you leave the United States? Weight is typically measured in kilograms instead of pounds, distance is measured in kilometers over ...

Confoundingly, the U.S. has stood on the sidelines for centuries as the rest of the world has adopted the metric system as its standard not only in science but in everyday life. (Meanwhile, we ...

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

Correction: A previous version of this story claimed the metric signage began in the 1980s. The decision was made in 1975. A unique stretch of highway in southern Arizona could soon lose what many ...

Americans have long used diverse weights and measures, reflecting their diverse origins. From colonial times, converting from one unit to another was part of courses in commercial arithmetic. The ...

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, ...