PepStack - Peptide Calculator

Reconstitute with confidence — exact BAC-water, concentration, syringe units, vial duration, and a weekly protocol schedule. Research-grade math, every time.

PepStack is a reconstitution and dosing-math calculator and protocol scheduler for peptide researchers.

CALCULATE WITH CONFIDENCE • Exact BAC-water volume, concentration, syringe units, and doses-per-vial • Supports U-100 / U-50 / U-40 / U-30 insulin syringes • Step-by-step reconstitution guide

PLAN YOUR PROTOCOL • Build a weekly schedule and sync dose reminders • Log doses, track streaks, rotate injection sites • Reference library of common research peptides

STAY ORGANIZED • Vial inventory with expiry and low-stock alerts • Optional Apple Health sync for weight & body-fat trends • Wellness journal and progress insights

PepStack is an educational calculator. It is not medical advice and does not sell or supply any substance. Always consult a qualified professional.

PepStack Pro is an auto-renewable subscription (monthly or annual). Payment is charged to your Apple ID; it auto-renews unless canceled at least 24 hours before the period ends. Manage or cancel in Settings. Pro unlocks unlimited protocols, dose logging, AI insights, and PDF export.

Terms of Use (EULA): https://pepstack.co/terms Privacy Policy: https://pepstack.co/privacy