Is my penis the normal size I'm 13. Hard my penis is about 10cm.soft its about 6cm.I've talked to my brother about this he's 15 nearly 16 and he's 17cm hard and about 9cm soft.I also talked to my friends and they said theirs are about the same size as my big brothers.compared to my brother and my friends who are my age mine is very small, am I normal will mine ever be the size of my friends