How much is 20mcg?

20 micrograms (mcg) is a measure of mass equal to one-twentieth of a milligram, as there are 1,000 micrograms in a milligram. To put it in perspective, 20 mcg is a very small amount, often used in pharmaceutical dosages for medications or vitamins. For instance, 20 mcg of vitamin D is a common daily supplement dosage.