1000 mcg = 1 mg

Divide your mcg amount by 1000 to get the same amount in mg.

X mcg = (x mcg)((1 mg)/(1000 mcg)) = x/1000 mg

Divide your mcg amount by 1000 to get the same amount in mg.

X mcg = (x mcg)((1 mg)/(1000 mcg)) = x/1000 mg