Free tool

Reconstitution calculator

Calculate peptide concentration after adding bacteriostatic water and how many units to draw on a U-100 insulin syringe.

Your vial

mg
mL

Enter the amount you've been told to measure. This tool doesn't recommend doses.

Syringe (U-100 insulin)

Results update as you type.

Results

Enter your vial details to see how much to draw.

How this works

Concentration = peptide in the vial ÷ water added. 5 mg in 2 mL is 2.5 mg (2,500 mcg) per mL.

Units to draw: U-100 insulin syringes hold 100 units per mL, so each unit is 0.01 mL. Units = dose ÷ concentration × 100.

This calculator only does the arithmetic for the numbers you enter. It is not medical advice and does not recommend any dose. Double-check every calculation, and talk to a qualified healthcare professional before using any compound.