Index/Topics/Human penis size studies

Human penis size studies

Major studies and systematic reviews on human penis size, including mean erect lengths and reference distributions from tens of thousands of men, while addressing limitations such as volunteer bias and measurement technique differences.

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11 results
Jan 19, 2026
Most Viewed

What are the documented percentiles (5th, 50th, 95th) for erect penis length in clinician‑measured meta‑analyses?

A widely cited clinician‑measured nomogram from Veale et al. (pooled n and simulated distribution) places the median erect penile length at about 13.12 cm, with approximate 5th and 95th percentiles ne...

Jan 19, 2026
Most Viewed

Which peer‑reviewed meta‑analyses examine geographic versus self‑identified racial differences in penile measurements?

Three recent, peer‑reviewed systematic reviews and meta‑analyses form the backbone of contemporary academic discussion about penile measurements: a 2015 large patient‑level nomogram/meta‑analysis that...

Jan 20, 2026

What peer-reviewed studies provide average penis size data broken down by country?

A small set of peer‑reviewed systematic reviews and meta‑analyses provide the most reliable country‑level or region‑level estimates of average penile dimensions; notable among these are Veale et al.’s...

Jan 20, 2026

How correlated are penis length and girth in clinician‑measured studies, and where can joint distribution data be found?

Clinician‑measured studies overwhelmingly show a positive relationship between penile length and girth, typically weak-to-moderate in strength and variable across samples, but heterogeneity in measure...

Jan 16, 2026

What numeric correlation coefficients between stretched/erect length and girth are reported in the original studies included in Veale et al.'s 2015 review?

Veale et al.’s 2015 systematic review concluded that correlations between penile length (stretched or erect) and other penile dimensions — including girth (circumference) — are inconsistent and genera...

Jan 12, 2026

Which studies report 90th and 95th percentile erect penis lengths and what were their sample sizes?

Two sources commonly cited for erect penis percentiles are the 2015 systematic review by Veale et al., which produced nomograms from provider-measured studies and pooled 692 erect measurements (report...

Jan 10, 2026

How were penis length percentiles measured and standardized in the 2015 Veale study?

The 2015 Veale et al. paper pooled penile measurements from published studies that used clinician-measured, standardized procedures, combined those data into weighted means and pooled standard deviati...

Jan 9, 2026

What percentile values for erect penis length did Veale et al. (2015) include in their nomograms (i.e., the 25th, 50th, 75th percentiles)?

Veale et al. reported an erect penis mean of 13.12 cm with a pooled standard deviation of 1.66 cm and used simulated normal distributions to build their nomograms . Translating that reported mean and ...

Jan 9, 2026

What did the 2015 Veale et al. systematic review report as mean and median erect penis length?

Veale et al.’s 2015 systematic review reported a pooled mean erect penile length of 13.12 cm (standard deviation 1.66 cm) from 692 clinically measured erect penis observations, and built nomograms to ...

Jan 8, 2026

What methodology did the 2015 Veale et al study use for measuring penis length?

The 2015 Veale et al. paper was a systematic review and meta‑analysis that pooled clinic‑measured penile dimensions to build nomograms; it only used studies where measurements were performed by health...

Jan 7, 2026

How does average penis girth in the United States compare to global averages (e.g., 2015 systematic reviews)?

The best large-scale clinician‑measured synthesis (Veale et al., 2015) reports an average erect circumference (girth) of about 11.66 cm (4.59 in), and a later body of work confirms similar global nomo...