Convert a prescribed or known peptide dose into mL draw volume and insulin syringe units. Free, fast, and educational — designed to help you understand the math behind your prescription.
Educational use only. Always verify your dose, concentration, and syringe markings with your prescribing clinician and pharmacist.
Dose Conversion Tool
Enter your vial information and target dose to see the exact draw volume and syringe units. All fields are required unless marked optional.
The Math Explained
Understanding the math helps you double-check calculations and catch errors before they happen. This is purely educational — always verify with your pharmacy label.
Concentration tells you how much peptide is in each milliliter of solution. It depends entirely on how much diluent (bacteriostatic water) was added to the vial.
Once you know the concentration, you can calculate how many milliliters to draw to get your target dose.
Insulin syringes display "units" instead of milliliters. On a U-100 syringe, 100 units = 1 mL, so 1 unit = 0.01 mL.
Insulin syringes use "units" as a volumetric shorthand. On a U-100 syringe, 100 units equals 1 mL. Each small mark typically equals 1 unit (0.01 mL). When used for peptides, you're simply using the markings as a way to measure small volumes.
Adding more water to the same vial lowers the concentration — meaning you draw more per dose. Adding less water raises concentration — you draw less. This is why verifying your exact reconstitution instructions with your pharmacist is critical.
Your vial label shows the total peptide content (e.g., "5 mg"). Your pharmacy or clinician instructions specify how much BAC water to add. These two numbers are what this calculator needs. Never guess either value.
The most common errors are: mixing up mg and mcg (off by 1,000×), using the wrong syringe calibration, assuming all vials are the same concentration, and using a different diluent volume than prescribed. Double-check every input.
Educational Reference
General educational context about peptides studied in research and clinical settings. Not prescribing information.
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Frequently Asked
Important Guidance
This section outlines what this tool is, what it is not, and the critical steps to verify before use.
Do not inject based on an online calculator alone.
Results from this calculator are mathematical conversions based on the values you enter. They do not account for the actual purity, concentration, or formulation of your specific product. Your prescription label, compounding pharmacy, and licensed clinician are your authoritative sources for dosing instructions.