Penis Size Calculator 2025 - Medical Reference & Statistics | Thiyagi.com

Penis Size Calculator

Medical reference & statistical comparison tool

Privacy & Confidentiality

All calculations are performed locally in your browser. No measurements or personal data are stored or transmitted to our servers.

Medical Disclaimer

This calculator is for educational and statistical reference purposes only. It should not be used for medical diagnosis or treatment decisions. Individual variation is normal and significant.

If you have medical concerns about sexual health or anatomy, please consult with a qualified healthcare provider or urologist.

Medical Reference Calculator

Compare measurements with medical studies and statistical data

Measurement Input

Accurate Measurement Guidelines

  • • Measure when fully erect for consistency
  • • Use a rigid ruler placed on top (dorsal side)
  • • Press ruler firmly against pubic bone
  • • Measure circumference with flexible tape
  • • Take measurements at room temperature

Medical Statistics & Research

Length Statistics (Erect)

Average (Mean): 13.12 cm (5.16 in)
Standard Deviation: ±1.66 cm (±0.65 in)
5th Percentile: 9.8 cm (3.9 in)
95th Percentile: 16.5 cm (6.5 in)
Source: British Journal of Urology International (2015) - Meta-analysis of 15,521 men

Circumference Statistics (Erect)

Average (Mean): 11.66 cm (4.59 in)
Standard Deviation: ±1.10 cm (±0.43 in)
5th Percentile: 9.9 cm (3.9 in)
95th Percentile: 13.9 cm (5.5 in)
Source: British Journal of Urology International (2015) - Meta-analysis of 15,521 men

Research Methodology & Notes

Study Parameters

  • • 20 studies from different countries
  • • 15,521 men aged 17+ years
  • • Professional medical measurements
  • • Standardized measurement techniques

Key Findings

  • • No correlation with shoe size or height
  • • Minimal variation across ethnicities
  • • Age shows slight negative correlation
  • • 95% of men fall within normal range

Health & Wellness Information

Psychological Aspects

Many men have unrealistic expectations about size due to pornography and media representation. Body dysmorphia related to genital size is common but treatable.

Important: Most concerns are psychological rather than physical.

Sexual Function

Sexual satisfaction is not correlated with penis size. Communication, technique, and overall intimacy are much more important factors for partner satisfaction.

Fact: Function is more important than size for satisfaction.

When to Consult a Doctor

Consult a urologist if you have concerns about function, pain, curvature, or if size significantly impacts your quality of life or relationships.

Remember: Professional medical advice is always best.

Frequently Asked Questions

What is the average penis size according to medical studies?

According to comprehensive medical studies, the average erect penis length is 13.12 cm (5.16 inches) with a standard deviation of 1.66 cm. The average erect circumference is 11.66 cm (4.59 inches) with a standard deviation of 1.10 cm.

How should penis measurements be taken accurately?

For accurate measurement: Length should be measured from the pubic bone to the tip of the glans on the dorsal (top) side when fully erect. Circumference should be measured at the thickest part of the shaft. Use a rigid ruler for length and flexible tape measure for circumference.

What factors can affect penis size?

Factors affecting penis size include genetics (primary factor), hormonal levels during development, age, overall health, body weight, and measurement technique. Environmental and lifestyle factors have minimal impact on adult size.

Are penis size concerns medically significant?

Most concerns about penis size are psychological rather than medical. The vast majority of men fall within the normal range. Medical intervention is only considered in cases of micropenis (less than 7 cm when erect) or if there are functional issues.

How accurate are online penis size calculators?

Online calculators can provide statistical comparisons based on scientific studies, but individual variation is significant. They should be used for educational purposes only and cannot replace professional medical assessment.