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AL2006
The metric (SI) unit of mass is the kilogram.

On Earth, 1 kilogram of mass weighs about 2.205 pounds.
Everest2017
In the systems of units and measurements,  CGS : gram is used to report the mass of an object. It is the mass of one cm³ of water. 
In SI system one Kilogram or Kg is used. It is equal to 1000 grams.

In FPS system pounds are used to report mass.