Free · no sign-up · no products
Research tools & calculators
Fast, transparent utilities for peptide research. Everything runs in your browser. Educational only, not medical or dosing advice.
Pharmacokinetics
Half-life & dosing calculator
Model how long a peptide stays bioactive and how dose frequency vs half-life builds to steady state — accumulation, peak-to-trough swing, and a concentration-over-time chart.
Structure–activity
Analog comparison
Put a native hormone beside the analogs engineered from it — receptor, molecular weight, evidence tier, and half-life on one log-scaled axis. See how durability engineering stretches minutes into days.
Protocol planning
Cycle planner
Sketch a research cycle from a goal stack: pick a length and level, then see the week-by-week timeline, reference dosing, and an estimated supply list. Shareable by URL. Research-use only.