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 ...

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

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 ...

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 ...

With just two non-metric allies left in the world, anybody can see that it’s increasingly urgent for the United States to convert itself to the system of weights and measures used by everybody else on ...

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. ...