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Mass (kg, gm, mg, microgram)

• Mass is the amount of substance or matter something is made of.
  
  The mass of any substance is determined by weight or the gravitational forces acting it. (more)
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
• gm is an abbreviation for gram and is a unit of weight.
  
  An even shorter abbreviation used is g.
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
• k placed before other abbreviations is an abbreviation for kilo which means one thousand (1000).
  
  Therefore 1 kilogram = 1000 gm (kg is an SI unit for mass) (more)
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
• m placed before other abbreviations is an abbreviation for milli-, which means one thousandth (1/1000).
  
  Therefore 1 milligram (mg) = one thousands (1/1000) of a gram
  
  or 1 gm = 1000 milligram (mg)
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
• microgram placed before other abbreviations is an abbreviation for micro-, which means one millionth (1/1,000,000). Therefore 1 microgram (mg) = one millionth (1/1,000,000) of a gram or 1 gm = 1,000,000 micrograms