1. Enter the numerical value of the mass you wish to convert, measured in mg, into the calculator. For example, if you wanted to convert a mass of 25 mg, you would enter 25. 2. Multiply
http://www.ehow.com/how_8653236_convertmgmicrogr...

3000 micrograms.
http://wiki.answers.com/Q/What_is_3mg_in_microgram

How many micrograms (g, ug or mcg) in a milligram (mg)? 1000 micrograms = 1 milligram,
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220 micrograms is equivalent to 0.22 milligrams (mg). It is also equal to 0.00022 grams.
http://www.kgbanswers.com/howmanymgarein220m...
