
What Is Average Penis Size? Length, Girth and Measurement
Average erect and flaccid penis size: what research measured, why numbers differ, and why average is not a health or satisfaction threshold.
Key points
Online averages of penis size vary widely because the source, measurement method and sample often differ.
Pelvic Floor Basic


Left: relax while lying down. Right: gently squeeze and lift around the urethra and anus. Keep your hips down.
Jogging / brisk walking

Swing your arms naturally and lengthen your stride slightly.
What did the clinical review measure?
Veale and colleagues analyzed standardized measurements made by health professionals. They reported mean erect length of about 13.12 cm and mean erect circumference of about 11.66 cm (Veale et al., 2015).
The often-quoted total of up to 15,521 participants does not mean that many erect lengths were recorded. The erect-length analysis involved 692 men and the erect-circumference analysis 381. This limitation matters when using the numbers to judge yourself.
What about flaccid measurements?
The same review found a mean flaccid length around 9.16 cm and a stretched flaccid length around 13.24 cm. Temperature, anxiety and measurement conditions can change flaccid appearance. A comparison made in a locker room tells you very little about erect length.
Is girth the same as width?
No. Girth means circumference around the penis, not the diameter across it. Advertisements may blur this distinction. See girth options and misconceptions.
Does being below average mean something is wrong?
Average is the middle of a distribution, not a diagnosis or a universal preference. If you have pain, pronounced curvature or concerns about development, consult a healthcare professional. If the issue is satisfaction, partner preferences and size offers a different perspective.
BananaUp tracks conditions such as firmness and sleep; anatomical length is a separate matter.
Sources
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