Penis Size Percentile: Length & Girth

Enter erect length and girth in inches or cm to see your percentile against the average (13.12 cm length, 11.66 cm girth) and a simple A+ to D size rank. Free to use.

References

  • Reference values (mean and standard deviation: erect length 13.12 cm, erect girth 11.66 cm) are taken from:
  • Veale D, Miles S, Bramley S, Muir G, Hodsoll J. Am I normal? A systematic review and construction of nomograms for flaccid and erect penis length and circumference in up to 15,521 men. BJU Int. 2015;115(6):978–986. doi:10.1111/bju.13010 PubMed

Reference values and how to measure

  • Erect length: mean 13.12 cm, standard deviation 1.66 cm
  • Erect girth: mean 11.66 cm, standard deviation 1.1 cm
  • Deviation score = (your value − mean) ÷ standard deviation × 10 + 50; 50 represents the average.
  • For the most comparable result, measure when erect.
  • Length is base to tip; girth is the circumference at the widest point.