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Pubertal development

Pubertal development, including growth in penis length, continues through late adolescence, making it challenging to establish a precise average for 17-year-old males.

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Jan 20, 2026

average penis size for 15 yr old

The best-published cross‑sectional study specifically reporting age 15 gives an average stretched penile length (SPL) of about 11.82 cm for 15‑year‑old boys (Soydan et al.) . However, multiple large s...

Jan 11, 2026

When does puberty end?

Puberty ends when an individual completes the biological stages that lead to sexual maturity—clinically captured as Tanner Stage 5—most often in the mid-to-late teens, though the exact age varies wide...