At what girth do medical sources describe a penis as 'thick'?

1. What medical literature measures: averages, not “thick” thresholds

Large reviews and clinical studies report mean erect circumference values (for example, an erect mean circumference around 11.66 cm / 4.59 in in the 2015 review) and focus on measurement technique and variability rather than applying a qualitative tag like “thick” at a numeric cutoff ^{[1] [6]}. Medical reporting therefore treats girth as a measurement with population averages and standard deviations, not as a binary “thick/not thick” clinical category ^{[1] [6]}.

2. Popular and clinical commentators use “thick” descriptively, not diagnostically

Consumer-facing sex and health outlets translate averages into plain-language comparisons (e.g., “slightly smaller than the average cucumber”) and may describe what people commonly call “thick,” but these are descriptive and preference-based, not formal medical definitions ^{[2] [7]}. Sites that address “what is considered a thick penis” explain measurement and variation but stop short of a universal medical threshold ^[4].

3. Where you do see numbers: averages and preference studies

Multiple sources cite a consistent mean erect girth in the 11.6–12.7 cm (4.6–5.0 in) band from pooled studies and a large 2014/2015 synthesis of 15,000+ measurements; preference studies sometimes report that many women sampled preferred girths near the upper end of that range (for instance around 12.2 cm / 4.8 in in one 2015 preference study), but preference does not equal a clinical “thick” definition ^{[1] [8] [2]}.

4. Clinical concern arises at extremes, not “thickness” per se

Medical sources in the provided set note clinical attention typically occurs when girth is unusually small (micropenis context) or when abnormal increases cause dysfunction (for example rare reports of acquired excessive girth causing dyspareunia), not when girth is merely large by social standards ^{[6] [9]}. One review of rare “excessive girth” cases emphasizes that complaints about being “too wide” are very uncommon in urology practice ^[9].

5. Cosmetic and clinic sites will label sizes differently — watch for commercial motives

Urologists’ clinic pages and male-rejuvenation sites explain measurement and offer interventions to increase girth; these pages sometimes frame larger girth as desirable and discuss achievable ranges, but they also have a commercial intent and should not be read as neutral medical standards ^{[5] [10]}. That implicit agenda matters because it can push categorical language (“thick”) where peer-reviewed literature uses continuous measures ^{[5] [10]}.

6. What this means for the original question — practical guidance

Available sources show no single medical cutoff that declares a penis “thick.” If you want a working, evidence-linked benchmark used in reporting, note the pooled-average erect circumference of about 11.66 cm (4.59 in) and that people and clinics often use numbers above the average (roughly ≥12 cm / ~4.7–5.0 in) when describing a penis as relatively “thick,” but this is descriptive and preference-based rather than a formal medical definition ^{[1] [2] [8] [3]}.

7. Limitations and disagreements in the sources

The sources agree on average-range measurements but differ in tone: peer-reviewed syntheses present population statistics ^{[1] [6]}, mainstream health outlets discuss preferences and social perception ^{[2] [7]}, and clinics or commercial sites may emphasize enhancement options or higher desirable values ^{[5] [4]}. None of the provided materials offers a single authoritative medical rule that quantifies “thick,” and available sources do not mention an official numeric cutoff used by medical societies to define “thick” (not found in current reporting).

If you want, I can extract a short FAQ-style summary (e.g., how to measure correctly, condom sizing conversion, what to discuss with a clinician) using just these sources.