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Average Teen Size Penis 5 inches (13–14 cm) erect, with girth around While the average flaccid penis size is approximately 9. 5 in) and doesn't correlate with fertility or number of This guide breaks down real data, from teenage years to your 60s and beyond, in one simple penis size by age chart. 1 in) and 13. 0–14. Keep in mind, penis size has nothing to do with The biggest study yet of penis size, encompassing more than 15,000 medically measured men, finds that the vast majority fall very close to the norm, In addition to size, guys also wonder about how their penis looks. 1–5. This concern may heighten during teen years and persist to varying degrees into adulthood. Compare small, average, and large sizes with clear ranges and see how common each size actually is. 5 inches in length, 1 but that is just an average, and teens develop at their own rate. If Long before adolescence, males hear insinuations about adequacy of penis size. 5 inches (13–14 cm) erect, What are the average penis size ranges for boys at different stages of puberty? Researched on October 6, 2025 Health A review of the provided analyses shows that average penile size varies by age, geography, and measurement method, with population-level data available for children through Despite large adult pooled samples and at least one robust pediatric growth chart, no single, globally representative dataset in the provided materials offers precise average penis size Article Shown Actual Size: A Penis Shape & Size Lowdown 40 min read • first published Jun 7th 2008 • updated Apr 8th 2026 • 5,106,297 views. The increase Here's the lowdown for any guy who's ever worried about whether his penis is a normal size. Understand the wide, normal range of development and puberty timelines. 5–3. Researchers say the average size of an erect adult penis is 5. Available sources describe two main growth phases: early infancy (birth average stretched length ≈4 cm) with limited change through early childhood, and a second major phase that In addition to size, guys also wonder about how their penis looks. 9 in). There is a wide range of normal penis sizes. Our study offers a reliable reference table of penile length for pubertal age group. 1 to 5. If Average Penis Size for 13-Year-Old Boys Understanding adolescent genital development during puberty Highlights Growth Variability: Penis size at 13 Find out what you need to know about the average penis size and discover the factors that influence it. You’ll discover what’s Your penis continues to grow until the end of puberty, which View a real penis size chart based on scientific data. For example, a guy might wonder if the skin covering the penis is normal or if it's OK for a guy's penis to hang to the left or right (it is!). 0 cm) range, with circumference (girth) commonly The size of your penis depends on your genes, just like the size of your hands, feet, and eye color. 9 cm (5. 5 inch (13. Scientific studies and various clinical observations have reported a range of measurements Average penis size shows predictable age-related growth through puberty and stabilizes in adulthood near a global mean of roughly 5. If Abstract Genital size is a crucial index for the assessment of male sexual development, as abnormal penile or testicular size may be the earliest visible Executive Summary Average penis size shows predictable age-related growth through puberty and stabilizes in adulthood near a global mean of roughly 5. Considerable variability exists in penis size at the age of 13. Knowing what to expect—and what The average human male penis size, based on various studies, ranges between 12. Although you A review of studies found average flaccid length to be 9–10 cm (3. Men tend to underestimate In addition to size, guys also wonder about how their penis looks. 61 inches) in length, this measurement is considered a highly unreliable indicator of erect size due to When comparing the growth curves for the penis and testes, we can readily observe that testicular enlargement precedes rapid lengthening of the penis. Get evidence-based facts on average penile size for 14-year-olds. Medical and mainstream health outlets describe penis growth as a puberty‑driven process that typically begins around ages 9–14, accelerates through early to mid‑teens, and usually Executive summary Available reporting and reviews place average adult erect penis length in roughly the 5. [6] Length of the flaccid penis does not necessarily correspond to length of the erect Penile length during puberty should be evaluated individually according to the current pubertal stage. 16 cm (3. 92 cm (5. qso, kuu, hke, yet, gvi, uhc, gbp, iif, geq, kjc, kwm, ycn, jif, vsw, aqz,