"At what age does a boy's penis stop growing? "
Boys begin puberty (the time when a child starts to develop sexually) between the ages of about 8 or 9 and 14. It takes about 4 to 6 years to complete puberty. You can tell generally when penis development is finished by the pattern of pubic hair. When the pubic hair grows up from the pubic triangle to the belly button and onto the inner thigh, genital growth is usually complete. The final length of the penis can vary a lot from one man to the next. If the penis is between 3 and 7 inches long, it is considered normal. The penis can be measured by extending it to its full length and measuring from the base to the tip.
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