Enter your vial size, BAC water, and target dose — get the exact units to draw on a U-100 insulin syringe. The same math the StackMindr app runs, free in your browser.
Concentration is how much compound ends up in each millilitre of solution: the amount in the vial divided by the BAC (bacteriostatic) water you add. More water means a weaker mix and a bigger, easier-to-read draw; less water means a stronger mix and a smaller draw.
Units to draw is the number that matters at the needle. Insulin syringes are U-100, meaning 100 units per millilitre — so once you know the volume for your dose, the unit mark is just that volume × 100. A 1cc, 0.5cc, and 0.3cc syringe all use the same scale; they only differ in how much they hold.
Doses per vial tells you how long a vial lasts at your dose, so you can reorder before you run dry. For HGH the calculator uses the standard 1 mg = 3 IU conversion; for HCG and peptides it works directly from the IU or mg you enter.
StackMindr saves every vial, does this math automatically on each dose, decrements your inventory as you go, and reminds you when it's time. Free on iOS and Android.
This calculator is a mathematical tool for educational purposes only. It is not medical advice and does not diagnose, treat, or prescribe. Reconstitution and dosing carry real risk — always verify your own numbers and work with a qualified healthcare provider before starting or changing any protocol.