UTILITY TOOL
Unit Converter
Milligrams, micrograms, and international units — the three ways a dose gets written down, and the source of most measuring mistakes.
RESULT
1000
mcg · from 1 mg
mg vs mcg
One milligram is 1,000 micrograms. Peptide vials are labelled in mg; most peptide doses are written in mcg. A 5 mg vial holds 5,000 mcg — twenty 250 mcg doses.
What an IU is
An international unit measures biological activity, not mass, so the mg-to-IU factor is different for every compound. Somatropin (HGH) is about 3 IU per mg; HCG, insulin, and vitamins each have their own factor. Check your product label and enter that factor above.