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High-quality, investigator-measured studies converge on an average erect penile length of roughly 13 cm (about 5.1–5.2 inches) for adult men, but the peer‑reviewed literature rarely supplies robust, c...
Clinician‑measured penis size data are published mainly in peer‑reviewed urology, sexual medicine and men’s health journals and are systematically collated in systematic reviews and nomogram papers su...
Recent reviews and media coverage report an increase in average erect penis length in recent decades: a 2022 systematic review cited by Healthline and other outlets found a possible rise (for example,...
Multiple recent studies and reviews find that self-reported penis size is systematically biased compared with clinician-measured values: self-reports tend to be larger on average and a substantial min...
Multiple systematic reviews and large meta‑analyses put the average erect adult penis in the 13–14 cm (about 5.1–5.5 in) range; a widely cited 2015 review reported 13.12 cm (5.17 in) erect length . Me...
Large, systematic efforts exist that pool many individual studies to report erect penile length; the largest meta-analyses cover tens of thousands of men and report mean erect lengths near 13–14 cm (a...