Free Tool

Peptide Reconstitution Calculator

Peptide vial amount + bacteriostatic water volume + desired dose + syringe size — get the exact volume to draw, instantly.

Vial AmountHow many mg are in the vial

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Bac WaterHow much you'll reconstitute with

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Desired DoseThe amount you want per injection

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Draw VolumeExactly where to fill your syringe

How to use this calculator

Enter the peptide amount printed on your vial (mg).
Enter how much bacteriostatic water you added to that vial.
Enter your desired dose — pick mcg or mg.
Choose your syringe size and hit Calculate.

Research Use Only: This calculator is provided for laboratory research reference only and is not medical advice. Always verify calculations independently before preparing any compound.

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Run the Numbers

Peptide Vial Amount (mg)

Bacteriostatic Water (mL)

Desired Dose

Syringe Size (mL)

Result

Concentration —

Volume to Draw —

Draw To —

Fill in the fields above and hit Calculate.

How It Works

Reconstitution mixes freeze-dried (lyophilized) peptide powder with bacteriostatic water to create a liquid solution at a known concentration. Once mixed, this tool tells you exactly how much liquid to draw for any target dose.

Reading Your Syringe

Standard insulin syringes are U-100 — 100 units always equals 1 mL, no matter whether the barrel is 0.3, 0.5, or 1 mL. The barrel size just caps how much it can hold, so draw to the unit mark we calculate for you.