What length does a penis have to be to get categorized into the normal and acceptable category? For psychological and physical satisfaction, there is no such graph or figure that a penis need to achieve. In fact, many men with comparatively smaller penis never complained of any displeasure while some did. The reasons for dissatisfaction with the size of the penis may vary from person to person.

 

Source: http://www.medicalnewstoday.com

Source: http://www.theguardian.com

Size of the flaccid penis varies from the size of the penis in erected state. A flaccid penis could be anywhere between 1.5-5 inches while an erected penis could measure anywhere between 3-7.5 inches. Penis lengthening surgery is provides to men with flaccid penis size under 1.6 inches and erected penis measuring shorter than 3 inches.

Source: http://xtralarge.in

When penile surgery had only been started as a surgical procedure in the 70s, it was normally offered as a constructive or corrective surgery for any penile damage.  Nonetheless, the cosmetic procedure for the improving girth and length became well known during the 80s-90s.