Penis Size
Based on the largest peer-reviewed meta-analysis ever conducted, see where you fall on the global distribution.
All measurements in the source study were taken by healthcare professionals using standardized techniques.
You are longer than
50%
of men globally
Only 1 in 2 men are longer than you. The global research average is 13.12 cm (5.17 in).
Global Distribution — Erect Length
The perception gap: Studies show men systematically underestimate their own size when self-reporting — the average self-reported length is ~14.15 cm, vs. the clinically measured average of 13.12 cm. The measured data is more accurate.
Put It In Context
For scale: a chimpanzee erect penis averages ~8 cm, a gorilla ~3–4 cm despite their size, and a blue whale ~240–300 cm. Humans are notably large relative to body mass for a primate — a fact evolutionary biologists attribute to female mate choice rather than sperm competition. Your 13.1 cm puts you firmly in the human range, which is already an evolutionary outlier among great apes.
Curiosity Trail — explore next