13 cm Penis: 47th Percentile, About Average
A 13 cm (5.1 in) erect penis sits at the 47th percentile: bigger than about 47% of men. That is −0.1 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.
A 13 cm average lines up with these national figures most closely:
National averages are self-reported and rough, so treat them as context, not fact.
What this size means
Right in the middle of the pack. Sizes within a centimetre or so of the 13.1 cm average are the most common result in clinical measurement, and this one is longer than about 47% of men. If you have heard that average is 15 cm or 6 inches, that figure comes from self-reported surveys, which run long.
Try your own number
The slider starts at 13 cm. Drag it to your measurement and the curve and percentile update instantly. Nothing leaves your device.
Scrub the measurement to see the percentile area grow in real time.
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 12 cm. Girth is measured around the thickest part of the shaft.
Common questions
What percentile is a 13 cm penis?
It lands at the 47th percentile of erect length, bigger than about 47% of men, against the Veale 2015 mean of 13.1 cm.
How many men are bigger than 13 cm?
About 1 in 2 men are shorter. In a room of 100 men, about 53 would be longer.
Is 13 cm big?
It is −0.1 cm against the 13.1 cm average, at the 47th percentile, so 53% of men are longer.