To comply with the internationally accepted SI units.
The US does not use the metric system.
Anyone who does any science in the US will need to use the metric system because other scientist across the world will be using the system. In international trade, too, many commodities and product specifications are in the metric system.
There isn't a separate US metric system, the metric system is international and the same everywhere. So one kilometre in the U.S.A. is one kilometre.
metric system is for commies
The unit of length, meters, belongs to both the US Customary System and the metric system.
The Metric System.
No
No
We could. but we'd need the president to "okay" it. we just like to be different.
The US has not converted to the Metric System yet. We are still using the English Customary.
The unit of mass, the kilogram, is a part of both the US customary system and the metric system. In the US customary system, pounds are used for mass measurement, while the metric system uses kilograms.
The only unit that appears in both the modern SI (metric) system and the old fashioned system is the second.