Is 17cm considered a normal penis size for a 16 year old? Just a quick question.
Normal penis size?
Welcome to A2A, Linut.
Yes, it is normal. There are various ways of measuring, but unless you have used a very imaginative method, 17 cm is well above adult average, but not so long as to cause problems with condoms or sex. (For condom size, thickness/girth is in fact the important factor.)
Sixteen is about the age when the penis stops growing, though it very much depends on the individual.