Penis size percentile calculator
See exactly where you rank against clinician-measured research data — by global percentile, by country, and more. Free, instant, and nothing ever leaves your device.
Your measurements
Bone-pressed = ruler pushed in to the pubic bone (how research measures it).
Everything is calculated on your device. Your numbers are never uploaded or stored.
Around the 50th percentile for length
You're in the top 51% — about 1 in 2 men is bigger.
In a room of 100 random men
For context
Your length rarity is like being 5'9" tall (175 cm) among men. Closest everyday object: 🥫 tube of Pringles lid-to-label.
Reference: Veale et al. 2015 (BJU International). View study. Percentiles assume a normal distribution. Educational use only — not medical advice.
Average penis size (clinical data)
| Measurement | Average | Std. dev. |
|---|---|---|
| Erect length | 13.12 cm / 5.16 in | 1.66 cm |
| Erect girth | 11.66 cm / 4.59 in | 1.10 cm |
| Stretched length | 13.24 cm / 5.21 in | 1.89 cm |
| Flaccid length | 9.16 cm / 3.61 in | 1.57 cm |
Source: Veale et al., BJU International 2015. See our methodology.
Frequently asked questions
What is the average penis size?
In the most cited clinical research (Veale et al. 2015, n=15,521) the average erect length is 13.12 cm (5.16 in) and the average erect girth is 11.66 cm (4.59 in). Roughly 90% of men fall between 10.7 cm and 15.5 cm erect.
How is my percentile calculated?
Your measurement is compared to a normal distribution built from the study's mean and standard deviation. The percentile is the share of men estimated to be smaller than you. Everything runs in your browser — nothing is sent to a server.
Should I measure bone-pressed or not?
Research measures length bone-pressed (ruler pushed in to the pubic bone). If you measure without pressing, your result will read shorter, so we add a small correction so you can compare fairly. Girth is unaffected.
Is the country comparison reliable?
Treat it as entertainment. Country averages are pooled from very different studies, many self-reported, and are not nationally representative. The clinical percentile above is the trustworthy number.