Peptide Reconstitution Calculator

Enter what's in the vial, how much bacteriostatic water you added, and the amount you want per draw. Get the concentration and the exact mark on a U-100 syringe.

FOR RESEARCH USE ONLY
mg
Quick-pick a vial size

Fills in the vial amount (mg) only.

mL
Syringe size U-100 insulin

RESULTS

Draw to
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Volume
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Concentration
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Per 1 unit
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Per 10 units
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Draws per vial
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Enter an amount per draw to see the fill line.

Educational math tool. This calculator only converts units (mg, mcg, mL, syringe units). It does not suggest amounts and is not medical advice. Always double-check your own math.

How the math works

1
Concentration = vial mg ÷ water mL.
10 mg ÷ 2 mL = 5 mg/mL = 5,000 mcg/mL
2
Volume = amount per draw ÷ concentration.
250 mcg ÷ 5,000 mcg/mL = 0.05 mL
3
Units on a U-100 syringe = mL × 100.
0.05 mL × 100 = 5 units