4 Inch Penis: 4th Percentile, Below Average
A 4-inch (10.2 cm) erect penis sits at the 4th percentile: bigger than about 4% of men. That is −3 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 27 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).
Try your own number
The slider starts at 4 in (10.2 cm). Drag it to your measurement and the curve and percentile update instantly. Nothing leaves your device.
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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 9.2 cm. Girth is measured around the thickest part of the shaft.
Common questions
Full answer: Is 4 inches small? →
What percentile is a 4-inch penis?
It lands at the 4th percentile of erect length, bigger than about 4% of men, using the Veale 2015 nomogram (mean 13.1 cm).
How many men are bigger than 4 inches?
A size this small is itself uncommon: about 1 in 27 men are shorter. In a room of 100 men, about 96 would be longer.
Is 4 inches above or below average?
It is −3 cm against the 13.1 cm average, so 96% of men are longer.