For research purposes only. This page explains reconstitution/concentration math. It does not recommend any human dose.
Run the Numbers
Enter any vial size and water volume — the calculator returns the concentration and exact syringe volume for 100+ research compounds. Free, no login required.
Open the free reconstitution calculator →What "reconstitution" means
Reconstitution is dissolving a lyophilized (freeze-dried) research peptide in bacteriostatic water so its concentration can be measured precisely. The calculation is identical across compounds — only the vial mass and water volume change.
The universal formula
Concentration (mg/mL) = vial mass (mg) ÷ water volume (mL).
Measured volume (mL) = target amount ÷ concentration. (×100 for insulin-syringe units.)
Worked examples (illustrative math only)
- Research semaglutide, 10 mg vial in 2 mL water → 5 mg/mL.
- Research tirzepatide, 60 mg vial in 3 mL water → 20 mg/mL.
The calculator returns the concentration and the exact syringe volume for any vial size and water volume.
Important compliance note
Research-grade semaglutide and tirzepatide referenced here are research compounds, distinct from the FDA-approved drugs (semaglutide is the active in Ozempic®/Wegovy®; tirzepatide in Mounjaro®/Zepbound®). The research compound forms are not FDA-approved. This page covers measurement math only.
Open the Calculator
Let the free Peptide Manager Pro calculator return your concentration and syringe volume for any research compound.
Open the Calculator →Reminder: For research purposes only.