Peptide Reconstitution Calculator
Work out the concentration of a reconstituted vial from the peptide amount and the volume of bacteriostatic water added. This is a concentration-math utility for research measurement purposes — not dosing or human-use instruction.
This calculator only computes concentration for research measurement and dilution purposes. It does not reference syringe units, doses, or administration of any kind.
How to Use This Calculator
Enter the total peptide content of the vial in milligrams (shown on the product page or vial label), and the volume of bacteriostatic water you added during reconstitution, in milliliters. The calculator returns the resulting concentration in both mg/mL and mcg/mL. If you're using a KYIN Peptides product, you can select it from the quick-fill list above to prefill the vial's mg amount automatically.
Why Concentration Matters
Reconstitution doesn't change how much peptide is in the vial — it only changes how concentrated that peptide is in solution. Adding less water produces a more concentrated solution; adding more water produces a more dilute one. Knowing the resulting concentration is a basic prerequisite for any solution-based research protocol, since it determines how much volume corresponds to a given quantity of peptide. See our reconstitution guide for the handling considerations that come before this step, and our storage & stability guide for what to do with the solution afterward.
Reconstitution calculator questions
Does the amount of water I add change how much peptide is in the vial?
No. The total amount of peptide in the vial stays fixed — adding more or less bacteriostatic water only changes the concentration (how much peptide is present per mL of solution), not the total quantity.
Why does the calculator show both mg/mL and mcg/mL?
Research literature and protocols reference peptide amounts in both milligrams and micrograms depending on context. Since 1 mg equals 1,000 mcg, this calculator converts automatically so you don't have to do the conversion by hand.
Does this calculator tell me how much to inject?
No. This tool only calculates the concentration of a reconstituted solution for research measurement and dilution purposes — it does not reference syringe units, doses, or administration of any kind, and nothing on this page should be interpreted as dosing or human-use instruction.
Have a question about your order?
See our reconstitution guide, or browse the full catalogue for pricing and specs.