The formula of Mcg to Mg is as follows:

1 MCG = 1/1000 MG.

so 150 MCG = 150/1000 MG

= 3/20 MG

or

= 0.15 MG>> answer

so 150 MCG = 150/1000 MG

= 3/20 MG

or

= 0.15 MG>> answer

I need to take .25 mg so how much mcg is that

150 mcg

I have some melatonin that is. 300mcg. I need to take 1/4 of a mg. Do I take a whole pill of the 300 mcg to get that?

I guess I can't make the conversion. I have kelp pills that are 150 mcg each, and I am supposed to be taking 1200 mg a day. How many more pills would that be?