Calculate dosages, concentrations, and syringe units for research peptides. Supports standard calculations, reverse calculations, and multi-peptide blends.
Dose to Units Calculator
Know your dose? Find out how many units to draw on your syringe.
Water Types for Reconstitution
A practical breakdown of common water types people ask about for mixing peptides.
Bacteriostatic Water (BAC)
Sterile water with a preservative (commonly benzyl alcohol) designed for multi-dose use. Helps slow bacterial growth after the vial has been punctured multiple times.
- Multi-dose vials you’ll draw from repeatedly
- Convenience + reduced contamination risk
Sterile Water
Sterile water without preservative. Meant for single-use situations. Once opened or punctured, it has no preservative help against contamination.
- Single-use mixing where the solution won’t be stored long
- Cases where preservatives are specifically avoided
Tap Water
Not sterile. Even “clean” tap water can contain microorganisms, minerals, and impurities that can ruin the solution and increase infection risk.
- Risk of contamination/infection
- Unpredictable minerals/chemicals that can destabilize peptides
How to Use This Calculator
A step-by-step guide to calculating your peptide dosages accurately
Set Your Dose
Enter the amount of peptide you want per injection. Most peptide dosages are measured in micrograms (mcg), but some larger doses may be in milligrams (mg). Use the toggle to switch between units.
Enter Peptide Strength
This is the total amount of peptide powder in your vial, typically printed on the label in milligrams (mg). Common vial strengths include 5mg, 10mg, and 15mg.
Add Water Volume
Enter the amount of bacteriostatic water (BAC water) you’ll use to reconstitute the peptide. More water means a more diluted solution (easier to measure small doses), less water means a more concentrated solution.
Read Your Results
The calculator converts your inputs into concentration (mg/mL), the volume to draw in mL, equivalent syringe units (assuming 100 units = 1 mL), and how many doses you’ll get from one vial.