13 cm — Percentile Ranking
Erect Length
Percentile47th
ClassificationAverage
Z-score-0.07
vs. Mean-0.12 cm
Erect length distribution Distribution (cm)
Erect Girth
Percentile89th
ClassificationAbove average
Z-score1.22
vs. Mean1.34 cm
Erect girth distribution Distribution (cm)
What This Means
A erect size of 13 cm places you near the middle of the population distribution. You are within the typical range for adult males. This is based on the Veale et al. (2015) systematic review of 15,521 men.
How Common Is 13 cm?
Percentile47th
Men measuring shorter47%
Men measuring longer53%
About 47% of men have a erect length below 13 cm and 53% are above it — roughly 1 in 2 men measure longer. Distribution based on the Veale et al. (2015) systematic review of 15,521 men.