4-Inch Girth, by the Numbers
A 4-inch (10.2 cm) erect girth sits at the 9th percentile, thicker than about 9% of men. That is −1.5 cm against the 11.7 cm average circumference.
How it compares
This girth calls for a snug / close-fit condom, roughly a 46 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 4-inch girth?
It lands at the 9th percentile of erect girth, thicker than roughly 9% of men, using the Veale 2015 mean of 11.7 cm.
How many men are thicker than a 4-inch girth?
A girth this small is itself uncommon: about 1 in 12 men are slimmer. In 100 men, about 91 would exceed 4 inches (10.2 cm) around.
Is a 4-inch girth above average?
It is −1.5 cm against the 11.7 cm average circumference, so 91% of men are thicker.