Universal Peptide & Nootropic Calculator

Follow these simple steps

Step 1 — Pick your peptide. Use the dropdown — peptides are grouped by goal (healing, growth, cognitive, sleep, metabolic, skin, specialty, stacks). You can scroll or just start typing to filter.
Step 2 — Pen or vial? Pick which one you’ve got. Pens are prefilled (3 mL / 300 clicks). Vials are powder you reconstitute with bacteriostatic water.
Step 3 — Tell us how many mg are in your pen or vial. Tap a common size chip or type your own number — any size works.
Step 4 — Tell us your target dose per injection. Tap a chip or type your own.

The maths updates live as you change anything. The math explainer at the bottom shows you exactly how each number was worked out.

Universal peptide & nootropic dose calculator

1. Pick your peptide

2. Choose pen or vial.

Standard research pen format: 3 mL total volume, 300 clicks per pen. That’s fixed — so the only thing that changes is how many mg are in your specific pen. mg per click = your pen’s mg ÷ 300.

Vial mode: most research peptide vials are 3 mL borosilicate glass (industry standard — about 99% of compounds ship in this size). Larger compounds like NAD+ or high-mg GHK-Cu sometimes come in 5–10 mL vials. The bacteriostatic water you add must fit inside your physical vial — for a standard 3 mL vial, that’s usually 1–3 mL of BAC water. Tell us the vial’s peptide content (in mg), the BAC water you added, and your target dose — we work out the concentration, the volume to draw, and the syringe units on a U-100 insulin syringe.

3. How many mg in your pen?

4. How much bacteriostatic water did you add?

4. What dose do you want per injection?

mg per click

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clicks per dose

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doses per pen

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concentration

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volume to draw

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syringe units (U-100)

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doses per vial

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Pick your numbers above — the maths show here.

Research and educational purposes only. Not medical advice. Not for human consumption. This calculator performs volumetric mathematics on the values you enter; it does not recommend doses. Compounds listed are not licensed as medicines for human use unless stated otherwise.

The math, in plain English

Pen mode (prefilled research pens)

mg per click = pen total mg ÷ 300
clicks needed = your target dose mg ÷ mg per click
doses per pen = pen total mg ÷ your target dose

Vial mode (lyophilised powder + BAC water)

concentration mg/mL = vial total mg ÷ BAC water mL
volume to draw mL = your target dose ÷ concentration
insulin syringe units (U-100) = volume mL × 100
doses per vial = vial total mg ÷ your target dose

Compliance: The calculator performs volumetric mathematics on values you enter. It does not recommend doses, supply, or sell any compound, and the outputs do not constitute medical advice. Several compounds in the dropdown are prescription-only medicines in the United Kingdom and are listed for information only — refer to each compound’s page for regulatory status. Not for human consumption.