Here are the key points about how the US has converted to the metric system:
- The US is one of the only remaining countries that does not use the metric system as its primary system of measurement. Most other countries adopted the metric system in the late 18th/early 19th century.
- In 1866, Congress passed a Joint Resolution stating that the metric system of measurement should be introduced into the United States "as soon as the same can be done without causing detriment to its business interests." However, no serious action was taken at that time.
- In 1975, the Metric Conversion Act was passed, declaring metric as the preferred system for trade and commerce in the US. It established the US Metric Board to coordinate the