Peptide Reconstitution & Dosing Calculator

This calculator uses a simple formula: Concentration = Peptide Amount (mg) / Water Volume (mL). For example, if you add 2 mL of bacteriostatic water to a 5 mg vial, your concentration is 2.5 mg/mL. Every 1 mL you draw contains 2.5 mg of peptide.

To figure out how much to draw for your dose, the calculator divides your desired dose by the concentration to get the volume in mL. Since a standard 100-unit insulin syringe holds 1 mL (where 100 units = 1 mL), the calculator multiplies the mL value by 100 to give you the number of units to draw on the syringe.

The "doses per vial" number tells you how many injections you'll get from a single vial at your chosen dose. Combined with your dosing frequency, the calculator then estimates how many vials you'll need for 4-week, 8-week, and 12-week supply periods.

For a complete step-by-step guide on the reconstitution process itself — including sterile technique, proper injection, and storage — see our full guide onhow to reconstitute peptides with bacteriostatic water.