![]() ![]() Overall, because men have been given inaccurate information, researchers found that most men underestimate the size of their penises compared to other men. Social desirability bias also contributes to inaccurate measurements. Why the discrepancy? If you asked a hundred men to measure their penis size and erection size, how would they do it? Would a self-confident man who feels he is well-endowed or a man who is anxious that he does not quite measure up be more likely to report their data? If a man knew he would report his penis size and erection size, would he err on the generous or the conservative side with the measurement? It's the same situation as women comparing their looks to air-brushed models and feeling self-conscious every time! Men are taught that it is socially desirable to have a bigger penis and a larger erection, just like women think the air-brushed look is socially desirable. If you go back to the table, you see that what most men think is average is actually in the "biggest numbers" columns. Most men believe that the average length of an erect penis is greater than 15.24 cm. When men were asked what they thought was an average penis and erection size, their answers were pretty far off from what researchers found. The Discrepancy Between What Men Think the Average Penis Length Is and the Data The average penile and erection length in a study of over 15,000 men (in centimeters): ![]() Notice that the difference between the larger and smaller numbers becomes greater as you add more standard deviations. Using the information from the study, you can determine the upper and lower bounds of each. In a normal distribution, approximately 68% of men would be within one standard deviation of the mean, 95% of men are within two standard deviations, and 99% are within three standard deviations. Likewise, if the standard deviation is high, there is a wide range of lengths. If the standard deviation is low, you would expect most men to have penis and erection sizes close to the mean. Standard deviations (SD) give information on the amount of variance in penis size in the population. If your measurements are bigger than the smallest number in the "smallest number column" and smaller than the largest number in the "biggest numbers" column, you meet the definition of normal. To get a more accurate idea of what is normal, you need a little math.Ī More Accurate Measurement of What is Normalįeel free to skip the explanations on standard deviations in the next paragraph and jump right to the table. It does not answer the question, what is normal? Normal is a wide range of measurements. Here is what the study reported in BJUI found:Īverage flaccid penis circumference: 9.31 cmĪverage erect penis circumference: 11.61 cmĮven if it consisted of 15,000 men, an average number in a given population could only provide so much information. Research on Average Penis Length and Girth Consider reading How to Measure Your Penis Correctly to ensure your measurements are accurate. There are two important points here: the data is not self-reported, and the measurements were done using a standard procedure. Each study had to include a minimum of 50 participants. They only included studies in which measurements were made by a healthcare professional using a standard procedure. Researchers systematically reviewed all the studies available on penis size and erection size to gather more accurate data. That’s why we’ve reviewed the scientific studies to find out once and for all what is the average penis size - to put all of our minds at ease. Anxiety about sexual performance can lead to erectile dysfunction and premature ejaculation. Many men may feel anxious about how their penis and erection size may sexually satisfy themselves and their partners. Self-reported data tend to be inflated, leading many men to feel inferior, resulting in decreased self-confidence. Measurement errors and relying on self-reported data have led to a lot of misinformation on the internet on the average penis and erection size. In contrast, an average is a single number with half of men above and half below this marker.Īn average depends on what population is chosen, how accurate the measurements are and how many men are surveyed. A wide range of penis and erections sizes are normal. However, normal and average are very different. A study in the BJUI found that the average flaccid penis length is 9.16 cm while the average erect penis length is 13.24 cm.ĭeep down, everyone wants reassurance that they are normal. Most men, at some point, have wondered or even asked, "What is the average penis and erection size?" You may have also asked this question. ![]()
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