For research and educational purposes only. Not medical advice.
Multi-dose vial calculator
Estimate doses per peptide vial, weeks of supply, and projected vial-empty date from vial size, dose, cadence, and start date.
What this calculator returns
- Whole doses per vial from vial mass and dose amount.
- Weeks of supply based on the entered doses-per-week cadence.
- Projected vial-empty date from the start date.
Formula and example
The planner converts vial mass from milligrams to micrograms, divides by the chosen dose, and floors the result to whole doses per vial. Weeks of supply equals doses per vial divided by doses per week.
The vial-empty date is a calendar projection from the start date and dose cadence. It is not inventory tracking and does not account for missed doses, dose changes, spills, dead space, or stability limits.
Worked example: A 5 mg vial contains 5,000 mcg. At 250 mcg per dose, the vial has 20 whole doses.
Warnings and boundaries
- The projection does not save inventory or account for missed doses.
- Stability and usable-window limits may end before the vial is mathematically empty.
- Dead space, spills, and dose changes can change real-world supply.