Educational tool
Peptide Reconstitution Calculator
Enter your vial amount and how much diluent you added. Then enter a target dose to get the exact mL and U-100 insulin syringe units to draw.
Disclaimer: informational only. This calculator can’t verify your medication, syringe type, prescription, or labeling. Always follow your clinician/pharmacist instructions. If anything doesn’t match your label, stop and confirm.
Calculator
Assumes a U-100 syringe (100 units = 1 mL).
Concentration
— mg/mL
Volume to draw
— mL
U-100 syringe units
— units
Quick reference: 10 units = 0.10 mL, 5 units = 0.05 mL (U-100).
We show two decimals for mL and one decimal for units. If your syringe only marks whole units, round carefully.
How the math works (in plain English)
Reconstitution is just dilution. Your vial has a total amount of peptide (in mg), and you add a volume of diluent (in mL). That creates a concentration:
concentration (mg/mL) = vial amount (mg) ÷ diluent volume (mL)
Then you convert your target dose from mcg to mg (1,000 mcg = 1 mg) and compute the injection volume in mL.
FAQ
What syringe does this assume? ▾
U-100 insulin syringes (100 units = 1 mL). If your syringe is U-40 or something else, don’t use the unit output.
Why are there different dilution recommendations online? ▾
Different vial sizes, target doses, and preferences for injection volume lead to different “best” dilutions. The calculator doesn’t pick a dilution — it just makes the math explicit.
Where can I learn the full reconstitution process? ▾
Start with our complete peptide reconstitution guide and keep the calculator open while you configure your vial.