How many mg is 300 mcg?

Question

i bought some melatonin pills but when I got home i realized they were only 1mg and did not work at all. but i found some that were 300mcg. i was wondering how many mg they were.

Answer 1

300 mcg = 300 micrograms

= 0.3 mg

Answer 2

1000 mcg = 1 milligrams

so

300 mcg = 0.3 mg

So, the 300 mcg is only about a third the strength of 1 mg