99.8% Accuracy Verified

Peptide Dosage
Calculator

Convert peptide doses (mg or mcg) into insulin syringe units and mL in seconds. Simple, accurate, and free to use.

vial capacity20mg
Vial
vial capacity3mL
Vial
2.5 mg
0mg20mg
0.3 mL
0.3 mL Syringe
30 Units
0.5 mL
0.5 mL Syringe
50 Units
1.0 mL
1.0 mL Syringe
100 Units
Syringe Scale
injection result50.0Units (U-100 Scale)
Concentration:5.00 mg/mL
Injectable Volume:50.0 Units
Yield per Vial:4 Doses
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From Vial to Syringe Made Simple

Peptides are typically supplied as a freeze dried powder in a vial labeled by total weight (milligrams). 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.

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.

Join My Pep Pal Free

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.

Frequently Asked Questions

No. This calculator is a purely mathematical tool. It performs unit conversions based on the inputs you provide. Always consult a healthcare professional for dosing guidance.
mg (milligrams) and mcg (micrograms) measure the weight of the peptide. Syringe units measure volume. Our calculator bridges the two using your reconstitution volume.
Most common insulin syringes are U-100 (100 units per mL). Our default calculation assumes U-100 standard. Check your syringe packaging to confirm the calibration.
Yes, if you create a free account, you can save your calculations to your personal dashboard. You can also print the page using your browser's print function.
Only if you create an account and choose to save a calculation. Anonymous use of the calculator does not store your inputs on our servers.
Dosing depends on individual medical history, condition being treated, and specific product instructions. Only a licensed physician or healthcare provider can determine the appropriate dose for you.
Double-check all inputs: Ensure the vial amount is in mg, volume is in mL, and target dose is in mcg. A common error is mixing up mg and mcg (1mg = 1000mcg).

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.

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.