Peptide reconstitution calculator.
Enter the peptide milligrams and the bacteriostatic water you add. The calculator returns the concentration (mg/ml and mcg/ml) and, if you enter a dose, how many units that is on a U-100 insulin syringe. It is pure arithmetic on your numbers — one calculation, no protocol.
A math tool, not medical advice
This calculator only converts the numbers you type into concentration and syringe units. It does not tell you what peptide to use, what dose to take, or whether anything is safe or legal for you. Most peptides are not FDA-approved, and FDA testing has found many gray-market and compounded peptides were mislabeled or under-dosed. Talk to a licensed clinician before using any peptide, and never source from gray-market vendors. Nothing here is a recommendation.
The total milligrams of lyophilized (freeze-dried) peptide in the vial, from its label.
How much BAC water you reconstitute the vial with. More water = a more dilute solution.
Enter a dose to see it converted into insulin-syringe units. We convert the number you type — we do not suggest one.
The math
Enter the peptide amount and the water you're adding to see the concentration and syringe units. This tool only does the arithmetic — it never tells you what to take.
Arithmetic only. This is not a dose recommendation, and most peptides are not FDA-approved. See the safety note above.
How the reconstitution math works
Reconstitution is just dilution. The concentration is the peptide amount divided by the water volume:
| Step | Formula |
|---|---|
| Concentration (mg/ml) | peptide mg ÷ water ml |
| Concentration (mcg/ml) | mg/ml × 1,000 |
| mcg per unit (U-100) | mcg/ml ÷ 100 |
| Units for a dose | dose mcg ÷ mcg-per-unit |
A U-100 insulin syringe is marked in 100 units per millilitre, so one unit is 0.01 ml. That is why the same dose draws to a different number of units depending on how much water you reconstituted with.
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