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Peptide tools
Free, neutral calculators for peptide dosing math — reconstitution, draw volume, U-100 syringe units, unit conversion and half-life. Arithmetic and reference only — not medical advice.
AVAILABLE TOOLS
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Every tool runs client-side and free. Pick one to get started.
Reconstitution math for Melanotan II: convert mg to U-100 units for any vial size and BAC-water volume. No preset dose (not FDA-approved). Arithmetic only, not medical advice.
Convert your own GHK-Cu mg protocol into U-100 syringe units with plain reconstitution math. No established dose — you enter your own value. Reference only, not medical advice.
Convert TB-500 milligrams to U-100 syringe units for 2, 5, and 10 mg vials. No preset dose - enter your own protocol value. Arithmetic only, not medical advice.
Convert a BPC-157 protocol value in mg to a volume (mL and U-100 units) with pure reconstitution math for 5 mg and 10 mg vials. No preset dose; no route implied; not medical advice.
Convert a Sermorelin mg vial and bacteriostatic water into U-100 syringe units. Arithmetic only — no preset dose, no login.
Convert an ipamorelin amount to U-100 syringe units with transparent mg/mL math. Investigational peptide, no preset dose — enter your own. Arithmetic only, not medical advice.
Convert CJC-1295 vial mg to units on a U-100 syringe with pure reconstitution math. Investigational; no established dose.
Turn a mazdutide dose in mg into U-100 syringe units for 6 mg and 10 mg vials. Investigational (not FDA-approved); studied Phase 2 doses shown for reference only.
Reconstitution math for the 10 mg survodutide vial — convert your own mg dose to milliliters and U-100 units. Investigational; no established dose. Arithmetic only, not medical advice.
Convert your cagrilintide mg dose to U-100 syringe units. Investigational amylin analogue — arithmetic only, no preset dose.
Convert a retatrutide mg dose to U-100 syringe units with transparent reconstitution math. Investigational peptide — arithmetic only, no default dose.
Convert 10 mg PT-141 research vials into U-100 syringe units, with the FDA Vyleesi 1.75 mg label as the reference dose. Pure arithmetic, no sell, no login.
Convert a tesamorelin dose to U-100 units for 5, 10, or 20 mg vials. Neutral reconstitution math, no login. Not medical advice.
Convert a tirzepatide mg dose into U-100 syringe units from your solution’s concentration, plus the FDA-labeled weekly schedule for reference. Not medical advice.
Convert a semaglutide mg dose to U-100 syringe units for any reconstituted vial, with the FDA-labeled Wegovy titration ladder for reference. Math and reference only, not medical advice.
Reconstitution, draw volume, U-100 syringe units, cost and blend co-draw for 15+ peptides.
Estimate accumulation, steady state and washout — plus the GLP-1 titration plotter.
Concentration from vial mg + bacteriostatic water, or the water needed for a target concentration.
Convert between mg/mcg doses and U-100 insulin-syringe units for any concentration.
Discard date for a reconstituted vial, using the USP Chapter 797 28-day refrigerated benchmark.
Cost per dose, week, month and per mg from your own vial price — neutral, no vendor links.
Convert any amount between mcg, mg, mL and U-100 syringe units at a given concentration.
Pick the syringe units you want to draw; get the exact BAC water to add so your dose lands on a clean mark.
See exactly how many U-100 units to draw for your dose, shown on a to-scale syringe.
How long your vial lasts, weeks of supply, and when to reorder — capped at the 28-day beyond-use date.
The labeled week-by-week semaglutide and tirzepatide dose escalation, on your own start date.
Reconstitute two or more peptides in one vial and see the mg of each delivered per draw.
What these tools do (and don’t)
They handle the arithmetic behind peptide dosing — concentration, draw volume, syringe units, unit conversion, and one-compartment half-life estimates. They do not recommend a dose, diagnose, or replace a clinician; every number is something you can check against your own vial and your prescriber’s instructions.
Reference and arithmetic only. Not medical advice; verify with a clinician, product label, or pharmacist.
Frequently asked questions
Are the calculators free?
Yes — every tool is free, runs in your browser, and requires no login or email.
How accurate are they?
The arithmetic is exact for the inputs you enter, but they can’t verify your vial’s real potency or purity — always confirm the tested mg and the product label before relying on a result.
Do they give medical or dosing advice?
No. They are calculation and reference tools only. They do not tell you what dose to take; that belongs with a qualified professional.
Which peptides do they cover?
15+ common peptides including the GLP-1s (tirzepatide, semaglutide, retatrutide) and research peptides — and you can enter custom values for anything not listed.