It all depends how how fast your body is growing. I think a girl aged 13–15 wouldn't see yours as small. 4.5 inches is still a decent size, especially for someone who is 14.
13-14 years: 4.0 - 4.7 inches (graduating to medium fries) 15-16 years: 4.7 - 5.5 inches (reaching the large fry territory) 17-18 years and beyond: Most men reach their adult size, typically between 5 - 6 inches (erect)
Average Size & Variation
Because measurements vary, nearly 68% of men fall within the mid-range (4.6 to 6.0 in) when erect. Lower and higher extremes (below 9.7 cm or above 17.5 cm) are far less common.
The penis grows the most during puberty. Some boys start puberty around 9 and others don't start until they are 15. Usually by the end of puberty, a guy's penis has reached its expected size. Puberty usually ends about 4 years after it starts, so this is usually around age 13–19.
Studies. While results vary slightly across reputable studies, the consensus is that the mean human penis, when erect, is in the range 5–6 in (13–15 cm) in length.
The average size
According to Professor Joachim Osur, a reproductive and sexual health expert, the correct penile size is usually measured on erect manhood. Twelve and a half centimetres or 4.9 inches, to 19.1 centimetres or 7.5 inches, is the normal size for adult men.
Anything under 4.5 inches erect girth is considered slightly below average but not abnormal.
Many pumps, pills, weights, exercises and surgeries claim to increase the length and width of your penis. But, there's little scientific support for nonsurgical methods to enlarge the penis. And no trusted medical organization endorses penis surgery for purely cosmetic reasons.
Children reach puberty at different ages. Delayed puberty is when boys have little to no genital growth by age 14, or girls have no breast development by age 13, or no periods by age 16.
A 2020 research article notes that most males believe the average length of an erect penis is around 15.2 centimeters (cm) or 6 inches (in). In fact, the average is much smaller. While sizes vary widely, the average length is probably 12.9 to 13.97 cm (5.1–5.5 in), most likely toward this scale's smaller end.
At the time of their measurement, some men were with partners or "a friend," although most employed a DIY method for attaining an erection. Not surprisingly, penises come in all shapes and sizes. The smallest erect penis in the study was about 1.6 inches (4 cm) long, and the largest was 10.2 inches (26 cm) long.
Average male sizes vary by country, but in the U.S., men are around 5'9" (69 inches) tall and weigh about 199 lbs with a 40.6-inch waist; globally, heights range, with taller averages in Europe (e.g., Netherlands) and shorter in parts of Asia and South America, highlighting factors like genetics and nutrition. Clothing sizes like Medium often target heights of 5'9" to 5'11", but proportions differ, so checking specific size charts for chest, waist, and inseam is essential.
Based on these studies, the average length of an erect penis is between 5.1 and 5.5 inches (12.95-13.97 cm), but after taking volunteer bias into account, it is probably toward the lower end of this range. Studies show that a majority of men wish they were larger, with some choosing penile lengthening surgery.
The average length of a flaccid penis was 9.16 cm, whereas the average lengths of a flaccid stretched penis and an erect penis, respectively, were 13.24 and 13.12 cm, In addition, the average circumference was 9.31 cm for a flaccid penis and 11.66 cm for an erect penis...
The signs of puberty include:
When does puberty end? For girls, puberty typically ends around age 15 to 17 years. For boys, it tends to end around age 16 to 17 years. Again, every child is different, so these ages can vary.
14-Year-Old Milestones
At 14 years old, your child has some strong preferences, and they're not afraid to let them be known. They also have complex thoughts and may start thinking of the world beyond their community.
A micropenis usually happens because of a lack of fetal testosterone. This could be caused by many conditions, including one called hypogonadotropic hypogonadism. This disorder happens when your brain's hypothalamus doesn't make enough hormones to stimulate your testicles.
A 7-inch penis is likely above average in length, although most of the available data on average penis size is considered unreliable due to participant bias. There's no evidence that penis size is related to your fertility, orgasm strength, or overall sexual health.
Research has estimated that the average penis size for an adult is 13.24 centimeters (cm) or 5.21 inches when stretched. For adults, doctors consider micropenis for a stretched penile length of less than 9.3 cm or 3.66 inches.
It takes 3.6 inches from the root of the penis to the tip of the glans to hit the 50th percentile for flaccid length. That means 68 percent of men measure between 3 and 4.2 inches, and 95 percent are in the 2.4- to 4.8-inch range.
Average Girth: The average erect penis girth is around 4.7 inches. A thicker penis typically exceeds this average measurement.
In more reliable studies, where researchers did the measuring, the average erect penis length was about 5.36 inches, or 13.6 centimeters (cm). When measuring stretched, non-erect, penises, the average was about 5.1 inches, or 13 cm.