First, note that mg is the same as milligrams and ug is the same as micrograms. Thus, when you are asking to convert 4 mg to ug, you are asking to convert 4 milligrams to micrograms.

A milligram is larger than a microgram. Simply put, mg is larger than ug. In fact, a milligram is "10 to the power of 3" larger than a microgram.

Since a milligram is 10^3 larger than a microgram, it means that the conversion factor for mg to ug is 10^3. Therefore, you can multiply 4 mg by 10^3 to get 4 mg converted to ug.

Here is the answer with the math showing you how to convert 4 mg to ug by multiplying 4 by the conversion factor of 10^3.

4 x 10^3 = 4000

4 mg = 4000 ug

mg to ug Converter Need to convert another mg to ug? No problem! Submit another measurement of milligrams (mg) that you want to convert to micrograms (ug).

5 mg to ug

Go here for the next measurement of milligrams (mg) on our list that we have converted to micrograms (ug).

As you may have concluded from learning how to convert 4 mg to ug above, "4 milligrams to micrograms", "4 mg to ug", "4 mg to micrograms", and "4 milligrams to ug" are all the same thing.