Free peptide calculators
Accurate, no-nonsense tools for reconstitution and dosing — free, no account, no email. The same math that powers PepVault, the peptide tracker.
Vial mg + water + dose → the exact units to draw, the concentration, doses per vial, and the best water amount for a clean syringe mark.
Already mixed and drew some units? Work backwards — vial + water + units to the exact dose in mcg and mg.
See how a compound builds to steady state at your dose and schedule — estimated active level over time, peak and trough.
The standard dose-escalation ramps for semaglutide, tirzepatide, and retatrutide — week by week.
Convert a peptide dose between mcg, mg, and IU — and see which unit each kind of compound uses.