A study found that the average penis size for an erect penis is 14.2 cm (5.6 inches) Average circumference of an erect penis is 12.2 cm (4.8 inches). If your penis size is 14.2 cm at erect time then you is perfectly ok. Excessive masturbation during teenage time is also a reason for micro penis. If your penis length is small for masturbation habit of your early life it may be overcome by taking proper homeopathic remedies. Homoeopathic constitutional treatment will give you a permanent cure without any side effects and minimum dose itself. Medicines will reach you via courier services