8.5 inches — Percentile Ranking
Erect Length
Percentile100th
ClassificationAbove average
Z-score5.10
vs. Mean-4.62 cm
Erect length distribution Distribution (cm)
Erect Girth
Percentile100th
ClassificationAbove average
Z-score9.03
vs. Mean-3.16 cm
Erect girth distribution Distribution (cm)
What This Means
A erect size of 8.5 inches places you above the population average. This is based on the Veale et al. (2015) systematic review of 15,521 men.