Every erect length from 3 to 10 inches and from 8 to 25 cm: how it compares with other men, how rare it is, and whether it counts as big.
The average erect penis is 13.1 cm (5.2 in).
What is considered a big dick?
A penis of 15.2 cm (6 inches) is longer than 90% of men, and most people would call that big. At 17.8 cm (7 inches) it is longer than 99.8% — about 1 man in 400.
Penis size chart in inches
3-inch penis 7.6 cm
A 3-inch penis is shorter than 99.9% of men. About 1 in 2,169 men is this short or shorter.
Small
4-inch penis 10.2 cm
A 4-inch penis is shorter than 96.3% of men. About 1 in 27 men is this short or shorter.
Small
4.5-inch penis 11.4 cm
A 4.5-inch penis is shorter than 84.6% of men. About 1 in 6 men is this short or shorter.
Below average
5-inch penis 12.7 cm
A 5-inch penis is shorter than 60% of men.
Average
5.5-inch penis 14 cm
A 5.5-inch penis is longer than 69.6% of men. About 1 in 3 men is longer.
Average
6-inch penis 15.2 cm
A 6-inch penis is longer than 89.9% of men. About 1 in 10 men is longer.
Above average
6.5-inch penis 16.5 cm
A 6.5-inch penis is longer than 97.9% of men. About 1 in 49 men is longer.
Big
7-inch penis 17.8 cm
A 7-inch penis is longer than 99.8% of men. About 1 in 400 men is longer.
Big
7.5-inch penis 19.1 cm
A 7.5-inch penis is longer than 99.9% of men. About 1 in 5,650 men is longer.
Very rare
8-inch penis 20.3 cm
A 8-inch penis is longer than 99.9% of men. Fewer than 1 in 10,000 men are longer.
Very rare
9-inch penis 22.9 cm
A 9-inch penis is longer than 99.9% of men. Fewer than 1 in 10,000 men are longer.
Very rare
10-inch penis 25.4 cm
A 10-inch penis is longer than 99.9% of men. Fewer than 1 in 10,000 men are longer.
Very rare
Penis size chart in centimetres
8 cm penis 3.1 in
A 8 cm penis is shorter than 99.9% of men. About 1 in 980 men is this short or shorter.
Small
9 cm penis 3.5 in
A 9 cm penis is shorter than 99.3% of men. About 1 in 153 men is this short or shorter.
Small
10 cm penis 3.9 in
A 10 cm penis is shorter than 97% of men. About 1 in 33 men is this short or shorter.
Small
11 cm penis 4.3 in
A 11 cm penis is shorter than 89.9% of men. About 1 in 10 men is this short or shorter.
Below average
12 cm penis 4.7 in
A 12 cm penis is shorter than 75% of men. About 1 in 4 men is this short or shorter.
Below average
13 cm penis 5.1 in
A 13 cm penis is shorter than 52.9% of men.
Average
14 cm penis 5.5 in
A 14 cm penis is longer than 70.2% of men. About 1 in 3 men is longer.
Average
15 cm penis 5.9 in
A 15 cm penis is longer than 87.1% of men. About 1 in 8 men is longer.
Above average
16 cm penis 6.3 in
A 16 cm penis is longer than 95.9% of men. About 1 in 24 men is longer.
Big
17 cm penis 6.7 in
A 17 cm penis is longer than 99% of men. About 1 in 103 men is longer.
Big
18 cm penis 7.1 in
A 18 cm penis is longer than 99.8% of men. About 1 in 609 men is longer.
Big
19 cm penis 7.5 in
A 19 cm penis is longer than 99.9% of men. About 1 in 5,039 men is longer.
Very rare
20 cm penis 7.9 in
A 20 cm penis is longer than 99.9% of men. Fewer than 1 in 10,000 men are longer.
Very rare
21 cm penis 8.3 in
A 21 cm penis is longer than 99.9% of men. Fewer than 1 in 10,000 men are longer.
Very rare
22 cm penis 8.7 in
A 22 cm penis is longer than 99.9% of men. Fewer than 1 in 10,000 men are longer.
Very rare
23 cm penis 9.1 in
A 23 cm penis is longer than 99.9% of men. Fewer than 1 in 10,000 men are longer.
Very rare
24 cm penis 9.4 in
A 24 cm penis is longer than 99.9% of men. Fewer than 1 in 10,000 men are longer.
Very rare
25 cm penis 9.8 in
A 25 cm penis is longer than 99.9% of men. Fewer than 1 in 10,000 men are longer.
Very rare
How the chart is worked out
Each percentile comes from the average and spread of erect length in Veale et al. (2015), a review of 15,521 men measured by clinicians, assuming a normal distribution. Past about 1 in 10,000 the model is a guess about men nobody measured, so the chart stops counting there.
Am I normal?
That is the question the study was built to answer, and for most men who ask it the answer is yes: about 2 in 3 men are between 11.5 cm (4.5 in) and 14.8 cm (5.8 in).
For entertainment and education; not medical advice.