Tool
Reconstitution & concentration calculator
Enter what is in the vial, how much liquid you are considering, and an amount to express as a volume. The tool shows the equation it uses at every step — it never suggests an amount of its own.
This tool does arithmetic on the numbers you type. It does not suggest amounts, validate doses or replace the documentation for a specific product.
The equation actually used
concentration = peptide amount ÷ liquid volume
5 mg ÷ 2 mL = 2.5 mg/mL (2500 mcg/mL)
volume for entered amount = amount ÷ concentration
0.25 mg ÷ 2.5 mg/mL = 0.1 mL = 10 units on a U100 syringe
- 2.5 mg/mL
- final concentration
- 2500 mcg/mL
- same concentration in mcg
- 0.1 mL
- volume holding 250 mcg
- 25 mcg
- per unit (100 units/mL)
Reference table for the entered vial
EXAMPLE CALCULATION — a mathematical reference for the vial amount you entered, not a recommended preparation. Print it as a concentration reference.
| Diluent volume | Concentration | 250 mcg in mL | Units (U100) |
|---|---|---|---|
| 0.5 mL | 10 mg/mL | 0.025 mL | 2.5 |
| 1 mL | 5 mg/mL | 0.05 mL | 5 |
| 2 mL | 2.5 mg/mL | 0.1 mL | 10 |
| 3 mL | 1.667 mg/mL | 0.15 mL | 15 |
| 5 mL | 1 mg/mL | 0.25 mL | 25 |
| 10 mL | 0.5 mg/mL | 0.5 mL | 50 |
Every row is the same arithmetic at a different diluent volume — more liquid means lower concentration and larger volumes for the same mass.
What this tool deliberately does not do
- It does not recommend a vial amount, a diluent volume or a dose. Every input is yours.
- It does not account for net peptide content — if a certificate reports less than 100%, the true concentration is lower.
- It does not know whether a given peptide is soluble at the resulting concentration; solubility is compound- and formulation-specific.
- It is not medical advice, and it says nothing about whether any of this is appropriate for a person.
The arithmetic explained step by step lives in concentration math; what the liquid should be is covered in bacteriostatic water, explained.