The typical erect penis is usually 5 to 6 inches long with a circumference of 4 to 5 inches. There's more variation in the size of flaccid penises. Some guys are genuinely smaller than that. In rare cases, genetics and hormone problems cause a condition called micropenis an erect penis of under 3 inches. Sometimes Peyronie's disease or prostate cancer surgery can reduce a guy's size.
Most people who consider penis enlargement treatments have normal-sized penises, meaning that they are adequately sized for sexual activity and urination. Manufacturers claim that products, including pills, creams, and stretching devices, can increase penis size. Some people also consider surgery. However, the Urology Care Foundation points out that nearly none of these methods work.
Penile augmentation involves injecting fat cells into the penis. The aim is to increase girth, or width, as well as length, in some cases The procedure carries risks. Side effects may include swelling and distortion of the penis. If a side effect is severe, the penis may require removal. Another method of penile augmentation involves grafting fat cells from elsewhere in the body onto the penis. This is less invasive and can add an average of 2.39–2.65 cm after 12 months. However, the organ can lose 20–80 percent of the new volume within 1 year of surgery, so people may need multiple surgeries to achieve the desired result. The second main type of surgery is suspensory ligament release. This ligament anchors the penis to the pubic area and provides support during an erection. If a surgeon cuts the ligament, this changes the angle of the penis, which can make it look longer. On average, suspensory ligament release can increase flaccid penis length by between 1–3 cm, but patient and partner satisfaction rates tend to be low. The lack of support during an erection can make penetration difficult.