CalcMyPeptide

Peptide Reconstitution Calculator

Reconstitution is the process of mixing lyophilized (freeze-dried) peptide powder with bacteriostatic water to create an injectable solution. Enter your vial size and water volume below to instantly calculate concentration, micrograms per unit, and the exact number of syringe units to draw for your desired dose.

حاسبة إعادة التكوين

التركيز

—mg/mL

ميكروغرام لكل وحدة

—mcg/unit

الوحدات التي سيتم سحبها

—وحدات

01020304050607080901000.00.20.40.60.81.0UNITSmL1.0 mLU-100 INSULIN SYRINGE

Formulas Used

Concentration

mg/mL = vial_mg ÷ water_mL

Micrograms per Unit

mcg/unit = (mg/mL × 1000) ÷ 100

Frequently Asked Questions

How much bacteriostatic water should I add?
Most users add 1-3 mL. More water = lower concentration = easier to measure small doses. Use our Reverse Calculator to find the optimal volume.
What is the concentration after reconstitution?
Concentration = vial size (mg) ÷ water added (mL). For a 5 mg vial with 2 mL water, the concentration is 2.5 mg/mL.
How do I read insulin syringe units?
Each "unit" on a U-100 syringe = 0.01 mL. A 0.3 mL syringe has 30 units, a 0.5 mL syringe has 50, and a 1.0 mL syringe has 100.
Does the peptide type matter for reconstitution math?
No — the reconstitution formula is universal. Concentration depends only on vial size and water volume, not the specific peptide.
How long does a reconstituted vial last?
21-28 days when stored at 2-8°C (refrigerated) after reconstitution with bacteriostatic water.

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