​How Many Countries Do Not Use the Metric System Today?

The number of countries that do not use the metric system in the world today are about 3 countries. The name of those countries are Liberia, Burma, and the United States of America. These countries do use some parts of the metric system or elements of the system. These countries have not fully accepted the metric system as of current.

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Countries That Don't Use The Metric System YouTube Video  2020:
https://www.youtube.com/watch?v=ce2zOmn3aKw