10 cm Penis: 3rd Percentile, Below Average
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
Drawn to scale against the 13.1 cm average and a few objects you can picture.
What this size means
Toward the short end of the curve: about 1 in 33 men are shorter. That is still above the roughly 9.3 cm line doctors use for micropenis. And in a survey of more than 50,000 adults, 85% of women said they were satisfied with their partner's size (Lever et al., 2006).
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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 about 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. In a room of 100 men, about 97 would be longer.
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.