1 million micrograms = 1 gram 1 thousand grams = 1 kilogram (and 1 kilogram = about 2.2 pounds actually, 2.2046226 pounds)
1 microgram is 0.000001 gram or 1 gram is 1000000 micrograms. Scroll down to related links and look at "Weight and mass conversion".
10 microgram is the smaller
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Micrograms x 0.001 = milligrams