HowMuchPep

Peptide Reconstitution Calculator

How much BAC water to add, and exactly where to pull your syringe. Every result shows the math that produced it, so you can check the work before you trust it.

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Mode

Auto picks the cleanest BAC water for you. Manual uses the water you already added.
1

Select your peptide

Pick from the list. This sets a common label, nothing more. Dedicated pages: see "Calculators by peptide" below.
2

What size is your syringe?

All insulin syringes are U-100, so 100 units equals 1 mL.
3

How much peptide is in your vial?

Check the label on the vial.
4

What is your dose per injection?

Select or enter the amount you want per shot.
Unit:

Step 1 of 2, Reconstitute

For the dose below, add this much BAC water (dose: ,)
,mL

Step 2 of 2, Draw your dose

Pull the syringe to
,units
Concentration
, per mL
Doses per vial
, at this dose

The math, step by step

    Medical Disclaimer. This calculator is for informational purposes only. It does not constitute medical advice and does not recommend doses. Always consult a qualified healthcare provider before using any peptide compound. Never self-medicate. Full disclaimer.
    By Peptide

    Calculators by peptide

    Each page presets the typical vial sizes and dose units for that compound and includes a reconstitution chart you can print or screenshot.

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    Why this calculator shows its work

    Most peptide calculators hand you a single number and hide how they got it. Then you try a second calculator, get a different number, and have no way to tell which one to trust. The FDA has documented people taking 5 to 20 times their intended dose of compounded peptides because of exactly that confusion between mg, mcg, mL, and syringe units.

    This tool shows the entire chain on every result: total peptide in the vial, water added, the concentration that creates, your dose, the liquid that dose requires, and the syringe units that liquid equals. Six lines of arithmetic you can verify yourself. It also warns you when a number looks like a unit mixup, when a draw is too small to measure honestly, and when your water amount risks overflowing the vial.

    FAQ

    Common Questions

    What does this calculator do?
    You select your vial size and intended dose. It tells you how much BAC water to add, and how much to draw on your syringe. That is it.
    What do I need before using it?
    The amount in your vial, your intended dose, and a standard insulin syringe (1 mL, 0.5 mL, or 0.3 mL). You do NOT need to know how much water to add. The calculator handles that.
    Why does it choose a specific amount of water?
    It optimizes for simplicity. Instead of uneven values like 13.7 units, it aligns your dose with clean numbers like 10 or 20 units. That makes dosing consistent and cuts down on mistakes.
    What does "draw to X units" mean?
    That is how much to pull on your insulin syringe. If it says draw to 10 units, you fill the syringe to the 10 mark.
    What units should I use, mg or mcg?
    Toggle it in the dose step. Remember: 1 mg = 1,000 mcg. Match the protocol you are following. If your entry looks like a unit mixup, the calculator says so before you draw anything.
    Does this tell me what dose I should take?
    No. This tool does not provide dosing recommendations. It only calculates based on the dose you input. Talk to a professional.
    Is this medical advice?
    No. Educational tool, calculation assistance only. Always consult a qualified professional before using any compound.