PILLAR M · SIZE REALITY CHECK
Size Reality Check
Enter your erect length and girth, see exactly where they fall on the only large systematic review of penis size — and get the comparison the screen never shows you.
- REFERENCE MEAN
- 13.12cm
- SD
- 1.66cm
- MEN REVIEWED
- 15,521
- STORED HERE
- 0bytes
INPUT
Your numbers
Drag the sliders or type exact values — both write to the same engine. Nothing is saved, sent or synced; the maths runs inside this tab.
8–20 cm · n = 692 measured
7–16 cm · n = 381 measured
LENGTH
13.1cm
LENGTH PCTL
50%
GIRTH
11.7cm
GIRTH PCTL
51%
Measure the way the studies did
Bone-pressed, flat against the pubic bone, along the upper surface of a fully erect penis — that is how the reference numbers were taken. Measuring from the fat pad or mid-shaft adds a centimetre or two that is not in the comparison you are comparing against.OUTPUT
Where you sit on the curve
The same normal distribution Veale et al. used to publish their nomograms — mean, standard deviation and your marker, redrawn live from the inputs above.
Your 13.1 cm lands at the 50th percentile of this distribution: about 50 of every 100 men measure shorter than you, and 50 measure above.
That is the entire meaning of the number. It is a position in a population, not a grade — nobody has ever been good in bed because they landed in the 80th percentile, and nobody has ever been bad because they landed in the 30th. Range, not ranking.
Z-SCORE
-0.01SD
VS MEAN
-0.02cm
MIDDLE 68%
11.46–14.78cm
MIDDLE 95%
9.80–16.44cm
The psychology: comparison is the injury
Tiggemann's body-image research on men links size anxiety to comparison and media exposure rather than to measured size — which is why this page leads with a range instead of a rank. Pornography is a comparison engine built from the extreme tail of this exact curve, so it can make an average measurement feel inadequate without a single centimetre changing. If the worry stays louder than the number, that gap itself is worth talking to a professional about: body-image distress responds to treatment, and it is not a character flaw.COMPARISON
Porn vs reality
The screen and the dataset disagree because one of them is a casting decision and the other is a measurement.
- Performers are cast from the far tail of the same curve — then separated from the rest of us by camera angle, foreshortening, reverse shots and editing.
- The “average size in porn” figures that circulate online come from no peer-reviewed dataset. Nobody has run one, so there is no honest number on this side of the table.
- You are comparing one unverified measurement of yourself against a selected extreme, watched repeatedly. That pattern — not the size — is what body-image research associates with distress.
MEAN LENGTH
13.12cm
STANDARD DEV.
1.66cm
MIDDLE 95%
9.80–16.44cm
ABOVE 16.44 CM
~2.5%
about 1 in 40 men
15,521 men reviewed across studies; the erect-length curve is built from 692 directly measured erections. Nine out of ten men land between about 10.4 and 15.9 cm.
The honest bit
Nothing here says size is irrelevant — it says the number you are worried about is measured on a distribution you are almost certainly somewhere ordinary on. What the data cannot do is rank you as a partner, because no such measurement exists.PREFERENCE DATA
What women actually picked
Prause et al. (2015) handed 75 women 33 physical 3D models and let them choose — once for a one-time partner, once for a long-term one.
ONE-TIME · LENGTH
16.3cm
ONE-TIME · GIRTH
12.7cm
LONG-TERM · LENGTH
16.0cm
LONG-TERM · GIRTH
12.2cm
The authors' own summary is the part worth keeping: women recalled model size accurately and “prefer penises only slightly larger than average.” That is a modest result, and it is the finding — not the anxiety-producing version of it that gets repeated.
Read the ruler before the number
The models spanned a range built around an assumed 15.2 cm (6 in) average — a different ruler from the 13.12 cm measured mean on this page. So treat these as “a little above their reference average”, never as a target: participants chose an object from a tray, which is not the same as what makes sex good. Arousal, comfort, technique and attention were not on that tray, and they are what the bedroom actually runs on.SAMPLE
75women
OBJECTS
333D models
PUBLISHED
2015PLoS One
Sources & evidence
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