How to use this calculator

1. Pick your dose. The amount of peptide you want in a single injection. Choose a preset or type your own value (in mg) into the custom field.
2. Pick the vial strength. The total amount of peptide in your vial — this is printed on the label (for example, a "10 mg vial"). Choose a preset or enter a custom value in mg.
3. Pick the water amount. How much bacteriostatic water you will add to reconstitute the vial. More water means a more dilute solution and a larger draw on the syringe for the same dose.
4. Read the result. The calculator shows how many units to draw on a standard 100-unit (1 mL) insulin syringe, and how many total doses your vial will yield at the chosen dose.

Custom values override the preset buttons. Clearing a custom field falls back to the selected preset.

If the required draw exceeds 100 units, the calculator will warn you. That usually means you reconstituted with too much water for the chosen dose — use less water, use a larger syringe, or split the dose.

This is a calculation tool only. It does not provide medical advice. Always follow guidance from a qualified healthcare professional.