13 cm Girth, by the Numbers
A 13 cm (5.1 in) erect girth sits at the 89th percentile, thicker than about 89% of men. That is +1.3 cm against the 11.7 cm average circumference.
How it compares
This girth calls for a large / XL condom, roughly a 59 mm nominal (lay-flat) width. Fit is set by girth, not length.
How this is measured
Girth is the circumference around the thickest part of the erect shaft, measured with a flexible tape or a strip of paper. It is unaffected by the bone-pressed convention that applies to length.
Common questions
What percentile is a 13 cm girth?
It lands at the 89th percentile of erect girth, thicker than roughly 89% of men, against the Veale 2015 mean of 11.7 cm.
How many men are thicker than 13 cm?
About 1 in 9 men are thicker. Out of 100 men, about 11 would exceed 13 cm (5.1 in) around.
Is a 13 cm girth big?
It is +1.3 cm against the 11.7 cm average circumference, at the 89th percentile, so 11% of men are thicker.