Peptide calculator for reconstitution & dose.
A peptides calculator covering 50+ research peptides. Enter your vial size, BAC water volume, and target dose. We'll show the concentration, the volume to draw, and the exact insulin syringe units.
How to use this calculator›
- 1. Vial — the peptide amount printed on the vial, in milligrams.
- 2. BAC water — the bacteriostatic water added to the vial. More water means a lower concentration and a larger, easier-to-read draw.
- 3. Dose — the single dose being measured, in milligrams.
- 4. Syringe — the barrel being drawn into. The diagram rescales to that syringe, so the same dose sits at a different mark on a 0.3 mL barrel than on a U-100.
Educational reference only — not medical advice or a dosing recommendation.
No black box.
The peptide mass divided by the BAC water volume gives the concentration in mg per mL of solution.
Divide your target dose by the concentration to get the volume of solution that contains that dose.
A U-100 insulin syringe reads 100 units per mL; a U-40 reads 40 units per mL. Barrel capacity matters as well as scale: a 0.3 mL barrel holds 30 units end to end, 0.5 mL holds 50, and 1 mL holds 100. Where a dose needs more than the barrel takes, the diagram flags it rather than drawing past the end, so the options are a larger syringe, more BAC water, or splitting the dose across two draws.
Specialized calculators.
Pre-set landing pages for compounds with non-standard dosing units (IU vs mg) or brand-specific pen presentations.
Or jump to a pre-configured peptide.
PeptideDose is an educational reference. It is not medical advice and does not replace consultation with a licensed healthcare provider. Doses shown in presets are derived from published protocols and product labels — they are not personal recommendations.