Calculator
Dosage unit converter.
Convert a dose you already have between micrograms, milligrams, millilitres, and U-100 insulin-syringe units. Set the concentration directly, or derive it from your vial amount and bacteriostatic water volume. Nothing you type here is saved or sent anywhere.
- 100 units = 1 mL
- mcg · mg · mL and units
- Nothing you type is saved
Your solution & amount
Solution: 2.5 mg/mL
The same amount, in every unit
How the conversion works
Once a peptide is reconstituted, its concentration (milligrams per millilitre) is fixed by how much peptide was in the vial and how much bacteriostatic water was added. That concentration is what lets you translate between a mass (mcg or mg), a volume (mL), and the units marked on a U-100 insulin syringe.
The two relationships
- Mass to mass: 1 mg = 1,000 mcg. This never needs a concentration.
- Mass to volume to units: volume = mass ÷ concentration, and on a U-100 syringe, 100 units = 1.0 mL. These need the concentration.
A note on “units” and “IU”
The “units” here are U-100 insulin-syringe units, a measure of volume where 100 units equals 1 millilitre. They are not International Units (IU), which are peptide-specific and are not convertible to a mass without a per-peptide factor. This converter deliberately does not convert IU, to avoid a misleading result.
Educational tool. Not medical advice.This converter changes the units of a dose you already have. It does not suggest or recommend a dose. Always follow your physician's instructions and verify the math before administering any peptide. Pru does not recommend, prescribe, or supply peptides outside of an established physician-patient relationship. If this is a medical emergency, call 911.