Peptide Reconstitution Calculator
Enter your vial strength, the bacteriostatic water you added, and the dose you need. The calculator returns the exact syringe measurement and how many doses the vial holds.
Your vial
Printed on the vial label, e.g. “5 mg”.
More water means a larger, easier-to-measure draw for the same dose.
1 mg = 1000 mcg.
Result
- Concentration
- 2,500 mcg / ml
- 2.5 mg / ml
- Doses per vial
- 20
For laboratory research use only. This tool performs a dilution calculation and is not guidance for human or veterinary use.
How the maths works
Read the vial
Take the strength printed on the label — typically 2 mg, 5 mg or 10 mg of lyophilized powder.
Choose your water volume
The amount of bacteriostatic water you add sets the concentration. More water gives a larger, easier-to-measure draw for the same dose; less water makes the vial last in fewer millilitres.
Draw to the mark
The calculator converts your dose into units on the syringe barrel, so you can measure it directly without converting millilitres in your head.
The formula
concentration (mcg/ml) = vial strength (mg) × 1000 ÷ water (ml)
volume (ml) = dose (mcg) ÷ concentration (mcg/ml)
units on a U-100 syringe = volume (ml) × 100
A U-100 insulin syringe is marked so that 100 units equal 1 ml, which is why a 0.10 ml draw reads as 10 units on the barrel. U-40 syringes mark 40 units to the millilitre — pick the right one above or the numbers will not match your barrel.
All NexPep compounds are supplied strictly for laboratory research use. This calculator is a dilution tool for handling research material and is not dosing guidance for human or veterinary use. See the FAQ for storage and handling questions.