Quick answers
Direct, data-backed answers to the size questions people actually ask.
Does penis size matter to women?
No — size matters far less than most men assume. In studies, women's preferred erect length for a long-term partner is about 16.0 cm (6.3 in), only slightly above the 13.1 cm (5.2 in) average, and most women report being satisfied with their partner's size.
What is the average penis size in inches?
The average erect penis is 5.16 inches (13.12 cm) long and 4.59 inches (11.66 cm) in girth, based on clinician measurements of 15,521 men (Veale et al., 2015). The median is 5.2 inches, and about 90% of men fall between 4.1 and 6.2 inches erect.
How do you measure your penis correctly?
To measure your penis correctly, measure when fully erect: press a ruler against the pubic bone at the base and measure along the top to the tip for length, and wrap a flexible tape around the thickest part for girth. The clinician-measured average is 13.12 cm (5.16 in) erect length and 11.66 cm (4.59 in) girth.
Is 4 inches small?
No, 4 inches is below average but not unusually small. In the largest clinician-measured study (Veale 2015, n=15,521), average erect length is 5.16 inches (13.12 cm), placing 4 inches around the 4th percentile — roughly 1 in 27 men, yet still well above the micropenis threshold.
Is 5 inches of girth big?
Yes. A 5-inch (12.7 cm) erect girth is bigger than average and sits around the 83rd percentile, meaning it's thicker than roughly 4 out of 5 men. The average erect girth is 4.59 inches (11.66 cm).
Is 5.5 inches average?
Yes. At 5.5 inches (14 cm) erect, you're above average — around the 70th percentile, longer than roughly 7 in 10 men. The clinician-measured average erect length is 5.16 inches (13.12 cm).
Is 5 inches below average?
Barely. 5 inches (12.7 cm) sits about 0.4 cm under the 13.12 cm average — right around the 40th percentile, dead center of normal.
Is 5 inches small?
No, 5 inches is not small. At about 5 inches erect, you're right around the 40th percentile — essentially average, since the clinically measured average erect length is 5.16 inches (13.12 cm).
Is 6 inches average?
No — 6 inches (15.2 cm) sits around the 90th percentile for erect length, so it's top-10% big, not average; the clinician-measured average is 5.2 inches (13.12 cm), Veale et al. 2015 (n=15,521).
Is 6 inches big?
Yes — 6 inches (15.2 cm) erect is well above average, landing near the 90th percentile, bigger than roughly 9 men in 10.
Is 7 inches big?
Yes — 7 inches (17.8 cm) is genuinely huge: roughly the 99.7th percentile, about 1 man in 400, towering nearly two inches over the 5.2-inch (13.1 cm) average.
Is 8 inches big?
Yes — 8 inches is exceptionally big. With an average erect length of about 5.2 inches (13.1 cm), an 8-inch erection is rarer than 1 in 10,000 men.
Is bigger always better?
No — bigger is not always better. The average erect penis is 13.12 cm (5.16 in) long, and roughly 90% of men land between 10.4 and 15.9 cm (4.1–6.2 in), with partner satisfaction peaking just above average, not at the extremes.
Is my penis normal?
Almost certainly yes — the average erect penis is 13.1 cm (5.2 inches), and roughly 90% of men land between 4.1 and 6.2 inches, so nearly any size you measure is flat-out normal.
What is a good girth?
A good girth is 11.66 cm (4.59 in) erect or anything above it — and at 12.7 cm (5 in) you're already near the 83rd percentile, sitting squarely in thick territory.
What is considered a big penis?
A penis is generally considered big when its erect length is about 15.2 cm (6.0 in) or more — the 90th percentile, reached by only about 1 in 10 men. The average erect length is 13.12 cm (5.16 in).
What is considered a small penis?
Clinically, only an erect or stretched length under about 9.3 cm (3.7 in) — a micropenis — is truly small, affecting roughly 0.6% of men. Anything from 10.4 cm (4.1 in) up is within the normal range.
What is the average girth?
The average erect girth (circumference) is 11.66 cm (4.59 in), per Veale et al. 2015. Most men land between about 10 and 13 cm around.
What is the average penis size?
The average erect penis is 13.12 cm (5.16 in) long and 11.66 cm (4.59 in) in circumference, based on clinician-measured data from up to 15,521 men (Veale et al., 2015).
What is the most common penis size?
The most common erect penis size is about 13.1 cm (5.2 inches) long and 11.7 cm (4.6 inches) around, based on clinician measurements of more than 15,000 men.
What penis size is in the top 1%?
A penis in the top 1% is about 17.0 cm (6.7 inches) erect or longer — that's the 99th percentile in the largest clinician-measured study. In inch terms, roughly 7 inches puts you near the top 0.3% (about 1 in 400 men).
What percentage of men are over 7 inches?
Under half a percent. Roughly 1 in 400 men has an erect length over 7 inches (17.8 cm) — it's genuinely rare, despite how common it looks online.
What percentage of men have a 6-inch penis?
About 10% of men have an erect penis of 6 inches or longer — a 6-inch (15.2 cm) erection sits at roughly the 90th percentile, well above average and found in only about 1 in 10 men.
What size do women prefer?
In the best study (3D models, Prause 2015), women preferred about 16 cm (6.3 in) length and 12.2 cm (4.8 in) girth for a long-term partner — slightly above average, with girth mattering as much as length.