How big are you, really?
Punch in two numbers and see exactly where you land — your percentile, your rarity, and the condoms that actually fit. Free, instant, and nothing ever leaves your device.
The data desk · clinician-measured · n=15,521
Drop your numbers in
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.
Your tier
Get condoms that fit your number
You came out standard — but “standard” boxes are a guess. MyONE makes 50+ custom widths so you buy the exact number, not the adjective on the shelf.
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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.
Where every man falls
Erect length follows a bell curve. Most men cluster near the average — the extremes are rare. Each bar is a slice of the population.
Population share by erect length (Veale 2015, n=15,521).
Average penis size (clinical data)
| Erect length | 13.12 cm 5.16 in SD 1.66 cm |
| Erect girth | 11.66 cm 4.59 in SD 1.10 cm |
| Stretched length | 13.24 cm 5.21 in SD 1.89 cm |
| Flaccid length | 9.16 cm 3.61 in SD 1.57 cm |
Source: Veale et al., BJU International 2015. See our methodology.
Condoms that actually fit
"Large" on a drugstore box is a guess. Fit is set by girth — find your nominal width in millimetres and the brands that make it.
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.