This vial duration calculator shows how long one peptide vial lasts on your dosing schedule and the date of your last full dose.
How to use the Vial Duration Calculator
- Enter the vial size, or tap a preset.
- Enter the desired dose and choose mcg or mg.
- Choose the frequency.
- Pick the start date.
- Read the result card. It updates as you type, and you can copy or share it.
About this calculator
The schedule starts on your start date. For patterns like 3x weekly, the start date counts as the first injection day and the pattern repeats every 7 days.
Frequently asked questions
How are 5 on / 2 off weeks counted?
Five consecutive dosing days starting on the start date, then two days off, repeating.
Sources
- General Chapter <797> Pharmaceutical Compounding: Sterile Preparations. U.S. Pharmacopeia.
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- Peptide Cycle Supply Planner: This peptide cycle supply planner totals the vials, BAC water, syringes, and swabs you need for a full cycle, rounded up so you don’t run short.
- Doses per Vial Calculator: This doses per vial calculator divides the amount in your vial by your dose to show how many full doses you get and what is left over.
- Peptide Cost per Dose Calculator: This peptide cost calculator breaks a vial price down into cost per dose, per week, and per cycle, including how many whole vials you need to buy.
Medical disclaimer. This calculator is for educational purposes only and is not medical advice. Results are mathematical estimates based on the values you enter. Many peptides listed here are not approved by the FDA for human use. Confirm every dose with a licensed healthcare provider or your approved study protocol, and follow the product label.
