Interactive Tools
Peptide Calculators
Free tools for reconstituting peptide vials and planning research dosing protocols. All calculations are for informational and educational purposes only.
Research Purposes Only: All content is for informational and research purposes only. This site does not provide medical advice, diagnosis, or treatment. Consult a qualified healthcare professional before using any peptide or supplement.
Quick Fill
Vial Information
Dose Settings
Enter the research dose in micrograms
Draw This Amount
= 0.1 mL for a 250 mcg dose
Concentration
2,500 mcg/mL
Per Syringe Unit
25.00 mcg
Doses per Vial
20
at 250 mcg each
Total in Vial
5,000 mcg
5 mg total
Syringe Fill Level
Summary: Add 2 mL of bacteriostatic water to a 5 mg vial. Each 100-unit syringe tick mark equals 25.00 mcg. For a 250 mcg dose, draw to 10 units. This vial provides approximately 20 doses.
Frequently Asked Questions
Enter your vial size (mg) and the amount of bacteriostatic water (mL) you plan to add. The calculator determines the concentration (mcg/mL) and shows exactly how many syringe units to draw for your desired dose.
Bacteriostatic water (BAC water) is sterile water containing 0.9% benzyl alcohol as a preservative. It prevents bacterial growth and allows multi-use from a single vial. Always use BAC water (not sterile water) for reconstituting research peptides that will be used over multiple days.
A standard 100-unit insulin syringe holds 1 mL. So 100 units = 1 mL, 50 units = 0.5 mL, and 10 units = 0.1 mL. Smaller syringes (50-unit, 30-unit) hold proportionally less volume but have finer graduation marks for more precise measurements.
Divide micrograms (mcg) by 1,000 to get milligrams (mg). For example: 250 mcg = 0.25 mg, 500 mcg = 0.5 mg, 1000 mcg = 1 mg. The calculators handle all unit conversions automatically.
When reconstituted with bacteriostatic water and stored properly in the refrigerator (2-8°C / 36-46°F), most peptide vials remain stable for approximately 30 days. Unreconstituted peptides stored frozen can last much longer. Always check specific storage guidelines for each peptide.