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Some surgical techniques change the appearance of your penis. That includes a procedure, recently approved by the FDA, called the pre-formed penile silicone block (Himplant, formerly called Penuma). It’s not available everywhere yet, says O'Leary, who has done the surgery and says he's been happy with the results. It’s a cosmetic procedure, so it isn’t covered by medical insurance, he says. “It is a silicone implant, a silicone sleeve about two-thirds the length of the penis, which is implanted under the skin to make the penis thicker," he says. But studies show there's not as much impact on penis length. You get this operation under general anesthesia in a hospital. “This surgery must be carefully controlled and should only be done by a urologist who has familiarity with the penile anatomy and the surgery itself, and who has the background and experience necessary to perform it,” O'Leary says. In one study of 400 men who had this surgery, penis width improved by as much as 56%. Men reported that they were mostly satisfied with the results, including better confidence and more self-esteem. Possible complications include infection and scarring after surgery, O'Leary says. The implant can also move out of place later on, he says. Bajic says some men are “growers, not showers,” which means their penises may seem small to them when they’re not erect. If they get the silicone sleeve surgery, “the implant always holds the penis at the same length." So it may not look smaller when it's not erect. Another type of surgery is suspensory ligament release. Doctors do this operation on men whose penises point straight down when they have an erection. The surgeon makes a cut in the ligament at the top of your scrotum to help your erection look normal. But it doesn’t increase your penis's length or size when it's erect, says Bajic. If you’re interested in surgery to treat penis size or your erections, make an appointment with a urologist, says Bajic. He's treated some men who had penile enlargement treatments like injections of silicone or fat. “I assure you, they did not have the outcomes they signed up for,” he says. These treatments don't work and can sometimes be dangerous, he says.

People often believe myths about the "average" or "normal" length of a penis. “Many men don’t have a realistic idea of what a normal size penis is, and we live in a society where pornography is pervasive. Some people believe that it’s normal to have a 12-inch penis,” says O’Leary. “The average erect penis is between 5 and 6 inches long, and flaccid (not erect), between 4 and 5 inches long.” Some men may think they need a larger penis to satisfy their partners, but that's likely not the case. About 85% of women in an internet survey of 52,000 heterosexual people said they were satisfied by the size of their partner’s penis. When men see Bajic to discuss penis enlargement options, he starts the discussion by making clear what “normal” means. “Societal perceptions of what is a smaller-than-normal penis aren’t true," he says. "There are a wide variety of factors that may drive some men to feel that their genitalia just doesn’t look as it should, including what they see in popular culture.” Bajic notes that satisfying hetero sex, for most women, “doesn’t begin with male penetration and end with male orgasm. Sometimes, through talking it out, many men that I treat realize that they have other body image issues and that their expectations about penis size are out of line,” he says. A few men do have medical conditions that result in a smaller-than-average penis: Micropenis. About 6 in 1,000 men have a micropenis, or a penis that's less than 2.8 inches long when stretched. This can happen when a male baby doesn’t get enough testosterone, the male sex hormone, before birth. Peyronie’s disease. This condition causes scar tissue buildup on the penis, causing it to bend and, in some men, shorten. Men with Peyronie’s disease may have trouble getting an erection, but there are treatments that can help.

Surgery is unlikely to significantly increase the size of the penis unless a person has a health condition, such as micropenis. Risks include distortion of the penis, scarring, and infection.

Various methods and products claim to enlarge the penis. However, there is limits to the scientific evidence to support their effectiveness. Some may have adverse effects.

The FDA warns that many male enhancement products contain unsafe ingredients. A person should check with a doctor before using any vitamins, supplements, or other products for penis enlargement.

The medical community only deems surgery necessary if a person has a condition called micropenis. This is an adult who has a penis of Micropenis usually results from hormonal factors and can occur in conjunction with certain genetic conditions. A doctor will start by prescribing hormonal treatment. If this is not effective, they may suggest penile reconstruction surgery. Scientists say that most men believe the average size of an erect penis is over 6 in. However, a 2025 study, which included 5,669 men from around the world, determined that the average erect penis was 13.84 cm (5.45 in) long and 11.91 cm (4.7 in) in girth. The authors of a 2025 study found that, on average, 85% of females in heterosexual relationships experience satisfaction with their partner’s penis size. However, 55% of men do not experience fulfilment with their penis size, pointing to issues of self-esteem. The risks of penis enlargement interventions vary according to the method. They