Talk:μg

how many ug's make 1 mg?

1000.
Because... 1 mg = 1/1,000 g, 1 μg = 1/1,000,000 g. 1 mg / 1 μg = (1/1,000 g) / (1/1,000,000 g) = 1,000,000 / 1,000 = 1,000.    AugPi 23:49, 14 August 2010 (UTC)