Human
Homo sapiens
13.1 cm
Erect length, pubo-penile junction to meatus along the dorsal surface, fat pad pushed to the bone

In 692 men measured by clinicians, the average erect penis was 13.12 cm long.
Margin note: The control group.
Sources
- Veale D., Miles S., Bramley S., Muir G., Hodsoll J. (2015) Am I normal? A systematic review and construction of nomograms for flaccid and erect penis length and circumference in up to 15 521 men. BJU International 115(6):978–986 doi:10.1111/bju.13010
- Schneider T., Sperling H., Lümmen G., Syllwasschy J., Rübben H. (2001) Does penile size in younger men cause problems in condom use? Urology 57(2):314–318 doi:10.1016/S0090-4295(00)00925-0
- Shalaby M.E., Almohsen A.E., El Shahid A.R., Abd Al-Sameaa M.T., Mostafa T. (2015) Penile length-somatometric parameters relationship in healthy Egyptian men. Andrologia 47(4):402–406 doi:10.1111/and.12275
- Gray H. (1918) Anatomy of the Human Body, 20th ed. Lea & Febiger, pp. 1237–1240, 1248–1250 link
- NCD Risk Factor Collaboration (NCD-RisC) (2020) Height and body-mass index trajectories of school-aged children and adolescents from 1985 to 2019 in 200 countries and territories: a pooled analysis of 2181 population-based studies with 65 million participants. The Lancet 396(10261):1511-1524; and its published global data file doi:10.1016/S0140-6736(20)31859-6
Drawn from
- Gray 1918, Figs 1154–1156: Glans capping the corpora; lateral section (flaccid) for glans shape and corona
- Gray 1918, pp. 1237–1240: Scrotum with its raphe, and testis size (4–5 cm long), used to size the scrotum
- Generated anatomical reference (hunyuan-image-v3 on Venice, seed 7011): Side-view photograph-style reference for natural form, curvature, foreskin fold and scrotum, generated for this plate and checked against Gray 1918 / Veale 2015 / Schneider 2001 (length:width within 10 %, glans shrunk to the Schneider ratio, scrotum height within 4 % of the Gray testis length). Kept locally, not published