12 cm — Percentile Ranking
Erect Length
Percentile25th
ClassificationBelow average
Z-score-0.67
vs. Mean-1.12 cm
Erect length distribution Distribution (cm)
Erect Girth
Percentile62th
ClassificationAverage
Z-score0.31
vs. Mean0.34 cm
Erect girth distribution Distribution (cm)
What This Means
A erect size of 12 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.