A male will grow until he is 21 years old. As for the penis, the size is determined by genetics. Medicine will tell you that you need to wait until 2 years after you stop growing to know what size your penis will be as an adult. So, you probably won’t know that information until you are 23. For more info:http://menshealth.about.com/cs/penisheal…
January 2, 2010 | 
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A male will grow until he is 21 years old. As for the penis, the size is determined by genetics. Medicine will tell you that you need to wait until 2 years after you stop growing to know what size your penis will be as an adult. So, you probably won’t know that information until you are 23. For more info:http://menshealth.about.com/cs/penisheal…
Thats probably the best yoiu are going to get,
its a nice size though.