← Peptide library
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
Browse the calculators
Every tool runs client-side and free. Pick one to get started.
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.
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.