Only Liberia, Myanmar, and the United States have not officially adopted the metric system, but each country uses some metric measurements alongside customary units. The modern standard metric system originated in 1960 and was adopted by most countries, but some countries still use other measurements for certain things.
Only three countries in the world have not officially adopted the metric system: Liberia, Myanmar and the United States. While each country uses some metric measurement—for example, in the United States, many scientific measurements and drug dosages are in metric units—each also uses a combination of customary units.
Learn more about the metric:
Prior to the 1960s, there was no real standard metric system—in fact, there were several variations. The modern standard metric system, denoted in SI units, originated in 1960 and was adopted by most countries in the 1960s and 1970s.
The first metric system was actually designed on the orders of Louis XVI of France. Thomas Jefferson was a fan of the system and tried to get it adopted in the United States, but the US Congress rejected it.
Even countries that are officially metric often have one or two survivors of other measurements. For example, in Brazil, Argentina and Australia, tire pressure is still measured in PSI – pounds of force per square inch – and properties in Japan are often sold by the tsubo, a unit of measurement roughly equivalent to two tatami mats.
Protect your devices with Threat Protection by NordVPN
