10 cm, by the Numbers
A 10 cm (3.9 in) erect penis sits at the 3rd percentile, bigger than about 3% of men. That is −3.1 cm against the 13.1 cm average.
How it compares
A 10 cm average lines up with these national figures most closely:
National averages are self-reported and rough, so treat them as context, not fact.
How this is measured
These figures use bone-pressed length, measured from the pubic bone, the way the reference nomograms were taken. Measured without pressing into the fat pad, the same erection reads about 9 cm. Girth is measured around the thickest part of the shaft.
Common questions
What percentile is a 10 cm penis?
It lands at the 3rd percentile of erect length, bigger than roughly 3% of men, against the Veale 2015 mean of 13.1 cm.
How many men are bigger than 10 cm?
A size this small is itself uncommon: about 1 in 33 men are shorter. Out of 100 men, about 97 would be above 10 cm (3.9 in).
Is 10 cm big?
It is −3.1 cm against the 13.1 cm average, at the 3rd percentile, so 97% of men are longer.