You are 20 your penis is 5 inch are you normal?
The national average erect penis length is 5 1/2 inches, so you are about as normal as you can get.
Im 14 and have a 3.5 inch soft penis and a 5 inch hard penis is this normal and how big will it grow?
That's ridiculous because a five-inch girth probably sets world records. See a doctor. Normal size. I disagree, it depends how he measured it, if it is that wide (without going around) that is most impressive. But if that is going around, then that is normal. Yes, absolutely normal for erect penis adult size.
If it's over an inch or so long, it is normal, and the size is inherited from the boy's mother and father. The person with a small penis is not responsible . . . he did not do anything wrong to cause his penis size. By the way, the average length of an erect penis in the US is about 5 inches to 5-1/4 inches.