Peptide reconstitution calculator
Enter what is in your vial to convert between a dose and a draw in U-100 syringe units.
Vial
Dose
Edit the dose or the draw, and the other values update together.
Each compound in this draw
Edit one compound's dose to calculate the rest of the blend.
The scale represents a 1 mL U-100 syringe. This calculator converts the values you enter. It does not recommend a dose.
How the math works
The vial gives the calculator one number, the concentration in milligrams per milliliter. When you enter a total amount, it divides that amount by the BAC water you added, so 5 mg of powder in 2 mL of water is 2.5 mg per mL. When you enter a strength, that number is already the concentration and the water amount is optional.
Your dose then divides by the concentration to give the volume to draw, and multiplying the volume by 100 converts it to units on a U-100 insulin syringe. A 250 mcg dose at 2.5 mg per mL works out to 0.1 mL, which reads as 10 units. You can also start from the draw and read the dose back the same way.
Adding more water never changes how much peptide the vial holds. More water dilutes the mix, so each dose becomes a larger and easier-to-measure draw, while less water concentrates it and makes each draw smaller.