Free peptide tools

The same unit-tested math that runs inside Peptilot, free on the web — no account, no signup, no tracking scripts.

Reconstitution calculator

Vial strength + BAC water + target dose → exact draw in insulin-syringe units and mL, with a warning when the draw looks off.

Half-life calculator

How long a compound stays in your system: elimination curves and clearance milestones from published half-life data.

Per-compound calculators

Prefilled with each compound's commonly sold vial sizes:

Half-life charts

Educational information for people who track their protocols — not medical advice, and never a recommendation to use any compound. Always work with a qualified healthcare provider.

Want the calculator plus reminders, dose logs, and live level charts for your own protocol?