Peptide Dosage
Calculator
Convert peptide doses (mg or mcg) into insulin syringe units and mL in seconds. Simple, accurate, and free to use.
Injection Result
Concentration
Total Doses
Vol per Dose
Protocol Note
Calculations are based on syringe calibration standard selected (U-100: 1mL = 100 Units, U-50: 0.5mL = 50 Units). Verify standard calibration before draw.
From Vial to Syringe — Made Simple
Peptides are typically supplied as a freeze-dried powder in a vial labeled by total weight (milligrams or micrograms). After reconstitution with a diluent, the solution is measured using an insulin syringe marked in syringe units, rather than milligrams.
This difference between how a peptide is labeled and how it is measured is a common source of confusion. Our calculator performs the concentration and volume calculations automatically, helping you convert from vial concentration to syringe markings without manual arithmetic.
Vial Amount (mg)
Total peptide weight in the vial.
Reconstitution Volume (mL)
Total volume of diluent added.
Desired Dose (mcg or mg)
The amount you want to draw. The calculator automatically converts between mg and mcg.
Why Accuracy Matters
Small errors in reconstitution or measurement can significantly affect the calculated concentration of a solution. Even a small difference in volume can result in a different calculated dose. Using a calculator instead of manual arithmetic helps simplify the calculation process and reduces calculation mistakes.
Keep a Record — On Your Terms
You don't need an account to use the calculator. But if you'd like to keep track of your calculations over time, you can create a free account to unlock a few optional extras.
Calculation History
Every conversion you save is stored in your personal dashboard, so you can look back at past entries instead of redoing the math.
Custom Labels
Add a name or note to each saved calculation (e.g. "Peptide A – Vial 1") to keep multiple entries organized.
Reminders
Set optional reminders tied to a saved calculation, useful for keeping track of reconstitution dates.
Cross-Device Access
Log in from any device to view your saved calculations, rather than relying on local browser storage.
Creating an account is entirely optional and only stores the values you choose to save. It does not add any medical interpretation, recommendation, or advice to your saved data — it simply keeps your own numbers organized.
Frequently Asked Questions
Important Information / Disclaimer
This calculator is provided for general informational and mathematical purposes only. It performs unit conversions based solely on user-provided values and does not constitute medical advice, a dosage recommendation, or a substitute for professional medical guidance.
Peptide products, their intended use, and applicable regulations vary by product and jurisdiction. Users are responsible for verifying all entered values, interpreting calculation results, complying with applicable laws, and consulting a qualified healthcare professional before making health-related decisions.
Optional account features (calculation history, labels, and reminders) are provided solely for personal record-keeping and scheduling convenience. They do not constitute medical advice, monitoring, or reminders of a clinical nature.
My Pep Pal makes no warranties regarding calculations generated from user-entered information and assumes no liability for any outcomes resulting from the use of this tool.