Peptide Reconstitution Calculator
Use this peptide reconstitution calculator to turn vial size, water volume, and target dose into the numbers you actually need: concentration in mg/ml, dose volume in ml, U-100 insulin syringe units, and estimated total doses per vial.
One-step math
Go from mg, ml, and mcg directly to concentration, draw volume, and syringe units.
U-100 output
Results are displayed in insulin syringe units so the final draw amount is easier to interpret.
Visible assumptions
The page shows formulas and examples so users can validate the output instead of trusting a black box.
Reference scenario
5 mg peptide + 2 ml water + 250 mcg target dose
Concentration
2.5 mg/ml
Dose volume
0.10 ml
Syringe units
10 units
Total doses
20
Total peptide content in the vial
Bacteriostatic or protocol-specific volume
Target amount for one administration
Primary output
10 units
Draw this amount on a U-100 insulin syringe.
2.5 mg/ml
0.1 ml
10 units
20
Best for first-pass reconstitution math
Use this mode when you know vial strength, water volume, and target dose, but want the final draw amount without doing each conversion manually.
Enter peptide amount
Use the total vial strength in milligrams, such as 2 mg, 5 mg, or 10 mg.
Add water volume
Enter the amount of bacteriostatic water or other diluent added during reconstitution.
Set your target dose
Enter the desired dose in mcg and the calculator converts it into ml and U-100 units instantly.
Concentration
peptide_mg / water_ml
Dose conversion
desired_dose_mcg / 1000
Dose volume
dose_mg / concentration
Insulin syringe units
volume_ml * 100
Important assumption
Insulin syringe units on this page assume a U-100 syringe, where 1 ml equals 100 units. This is a math reference, not medical advice.
Concentration in mg/ml
Useful for labeling a vial after reconstitution and checking future dose conversions.
Dose volume in ml
Shows the liquid volume needed for a single draw based on the target peptide dose.
Insulin syringe units
Converts the final draw volume into U-100 units so it is easier to measure on a syringe.
Estimated total doses
Helps estimate how many target doses are in a vial before handling loss or dead space.
Peptide Dosage Calculator
Use this when concentration is already known and you only need ml volume and insulin units.
How to Reconstitute Peptide
Read the full guide for labeling, handling, workflow, and reconstitution mistakes to avoid.
Peptide Calculator FAQ
Get quick answers about dilution, dose conversion, reconstitution, and syringe assumptions.
Peptide reconstitution FAQ
These are the most common follow-up questions after users calculate concentration and syringe units for a peptide vial.