Where does your girth rank in the clinical data?
Enter your erect girth and see exactly where you rank against Veale et al. (2015), 15,521 men, clinician-measured. No self-reported data.
Querying clinical data…
Where does your length rank?
Same Veale dataset, length percentile. Compare your two dimensions side by side.
What is the average penis girth?
Veale et al. (2015), published in BJU International, is the most methodologically rigorous reference for this. The study pooled data from 17 published studies covering 15,521 men, with a strict requirement that all measurements were taken by healthcare professionals, no self-reported data included.
The mean erect girth is 11.66 cm (4.59 in), with a standard deviation of 1.10 cm.
68% of men fall within one standard deviation of the mean, roughly 10.56 to 12.76 cm (4.16 to 5.02 in). The distribution is approximately normal, so most men cluster close to the average. A 5-inch girth sits around the 84th percentile. A 4-inch girth sits around the 12th.
How does girth compare to length in terms of variation?
Girth has a smaller standard deviation (1.10 cm) than length (1.66 cm), meaning there is proportionally less variation in girth across the population. The middle 50% of men span about 1.48 cm in girth (25th to 75th percentile), a tighter range than for length where the same span is around 2.24 cm.
In practical terms, girth sits in a narrower band for most men. The 5th to 95th percentile range for girth spans about 4.1 cm. For length, the equivalent range is about 5.6 cm. If you want to compare on both dimensions, the length percentile calculator covers length separately.
Why clinician-measured data matters
Self-reported girth measurements are even more susceptible to bias than length data, since circumference is harder to measure accurately without a flexible tape. Bogaert and Hershberger (2001) found self-reported erect circumferences averaging 13.4 cm, nearly 2 cm above the clinician-measured mean. The Veale et al. study excluded self-reported data entirely, applying the same quality filter across all 17 constituent studies.
Erect girth percentile reference
| Percentile | Girth (cm) | Girth (in) |
|---|---|---|
| 5th | 9.62 cm | 3.79 in |
| 25th | 10.92 cm | 4.30 in |
| 50th (Median) | 11.66 cm | 4.59 in |
| 75th | 12.40 cm | 4.88 in |
| 95th | 13.70 cm | 5.39 in |
Percentile estimates derived from reported mean (11.66 cm) and SD (1.10 cm) assuming normal distribution.
Frequently asked questions
Yes. The 50th percentile for erect girth in clinician-measured data is 4.59 inches (11.66 cm). A girth of 4.5 inches sits around the 43rd percentile, just below the median. The entire middle half of men (25th to 75th percentile) fall between 4.30 and 4.88 inches, so 4.5 is comfortably within the typical range.
5 inches (12.7 cm) of erect girth places you around the 84th percentile, meaning you are larger than approximately 84% of men in the clinician-measured population. This is above average but not extreme. The 95th percentile is around 5.39 inches (13.70 cm).
Survey research on partner preferences, including Prause et al. (2015), suggests girth is slightly more frequently cited as relevant to sensation than length. Girth affects internal pressure during penetration in a way length does not. However, individual preferences vary considerably, and clinically, neither measurement is linked to sexual satisfaction outcomes in couple research.
Use a flexible measuring tape (or a piece of string measured against a ruler) around the widest point of the erect shaft at mid-shaft, the measurement location used in the Veale et al. study. Avoid using a rigid ruler held against the circumference, which consistently underestimates. Measure twice to check consistency. Flaccid measurements are not comparable to erect figures from clinical studies.
4 inches (10.16 cm) of erect girth sits around the 12th percentile in the Veale et al. data, meaning about 88% of men measure larger in clinician-measured studies. This is below average, though small is a relative term. The 5th percentile is around 3.79 inches, so 4 inches is still above the clinical threshold for the lowest 5% of the population.
Yes. Bogaert and Hershberger's 2001 study found self-reported erect circumferences averaging 13.4 cm, nearly 2 cm above the Veale et al. clinician-measured mean of 11.66 cm. The discrepancy reflects a combination of measurement error and social desirability bias. Veale et al.'s decision to exclude all self-reported data was partly motivated by this well-documented inflation.
Standard condom nominal width is typically 52 mm (measured flat), corresponding to a comfortable fit for erect circumferences of approximately 10 to 13 cm (3.9 to 5.1 inches). This range covers roughly the 10th to 90th percentile in the Veale et al. data. Snugger-fit condoms are designed for circumferences below approximately 10 cm, larger-fit options accommodate above 13 cm.
Using Veale et al. mean values, the average erect girth (11.66 cm) is approximately 97% of the average erect length (11.99 cm), so erect girth and length are strikingly close in absolute measurement on average. There is no evidence that girth and length are strongly correlated within individuals. The smaller standard deviation for girth (1.10 cm versus 1.66 cm) means there is less individual variation, making the population more homogeneous on this dimension.
- 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 International. 2015;115(6):978-986.
- Prause N, Park J, Leung S, Miller G. Women's preferences for penis size: a new research method using selection among 3D models. PLoS ONE. 2015;10(9):e0133079.
- Bogaert AF, Hershberger S. The relation between sexual orientation and penile size. Archives of Sexual Behavior. 2001;30(3):331-340.