Index/People/Herbenick

Herbenick

Fact-Checks

5 results
Nov 21, 2025
Most Viewed

What is the range and standard deviation of erect penis length in adult men by decade?

Large, peer-reviewed meta-analyses and systematic reviews report mean adult erect penis length in the narrow range of about 12.9–13.9 cm (≈5.1–5.5 in) with pooled standard deviations typically around ...

Dec 18, 2025
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What reputable studies report average penis size by race in the United States?

Reputable, clinician‑measured meta‑analyses and systematic reviews find the average erect adult penis length in the United States and worldwide to be roughly 5.1–5.6 inches (≈13–14.5 cm) and conclude ...

Jan 30, 2026
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What is the percentage likelihood that a woman who has had 50 partners would have encountered a penis larger than 21cm long by 14.5cm girth

Using published -length">nomograms and large measured samples as benchmarks, the chance that a random erect penis exceeds 21 cm length and 14.5 cm girth is vanishingly small under most standard distri...

Jan 19, 2026

Is 12.7cm penis girth above average

A circumference (girth) of 12.7 cm is larger than the most commonly cited clinical average for erect penile circumference—11.66 cm—so it can be described as above average compared with widely‑used poo...

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...