A penis size of 20 centimeters (7.8 inches) or more is generally considered abnormally long.
While the average size for adult men ranges from 12.5 centimeters (4.9 inches) to 19.1 centimeters (7.5 inches), exceeding 20 centimeters is significantly outside this range. This information is based on the provided reference which states that a size of 20 centimeters (7.8 inches) is considered abnormally long.
- Average Range: 12.5 cm - 19.1 cm (4.9 in - 7.5 in)
- Abnormally Small: Less than 7 cm (2.7 in)
- Abnormally Long: More than 20 cm (7.8 in)
