Free Research Tool

Reconstitution & Dosage Calculator

Enter vial strength, water volume, and target amount. You get concentration, measurable volume, syringe units, and doses per vial, with every relationship shown so you can check the arithmetic yourself.

Transparent math · educational reference only
Educational calculation showing vial strength divided by water volume to determine concentration

Your Inputs

mg
mL

Your Results

Draw to this mark on your syringe
25units
0.25 mL · per 250 mcg dose
050u100u
Concentration5.00 mg/mL
Per unit on your syringe50 mcg / unit
Doses per vial40 doses
Total peptide in vial10 mg
Understanding The Math

How the calculator works

Nothing here is hidden. This is the arithmetic behind each number, so you can confirm it by hand or catch us being wrong.

1

Concentration

We divide the peptide in the vial by the water you added.
mg ÷ mL = mg/mL

2

Draw volume

We divide your dose by the concentration to get the millilitres to draw.
dose ÷ concentration = mL

3

Syringe units

On a U-100 syringe, 100 units = 1 mL, so we multiply.
mL × 100 = units

4

Doses per vial

We divide the total peptide by your dose.
total ÷ dose = doses

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