8 inches is small to medium for your age bracket
Some people are idiots. Width is going to vary just like length and one doesn't depend on the other. Width or diameter could be 1 inch to 1 1/2 inches. Much more than that would be rare even in an adult. Happens, just like 12 inch ones but rarely.
about 4-6 inches
Depends on your body build
Nothing to worry about as that is average size.
See the chart below on averages: Age 11 - 3 inches aroused Age 12 - 3.8 inches aroused. Age 13 - 4.8 inches Age 14 - 5.4 inches Age 15 - 5.6 inches Age 16 - 5.7 inches Age 17 - 5.8 inches Age 18 - 5.8 inches Age 19+ - 5.9 inches so showing age 13 average is 4.8" so you are right on target for your age/size.
No, it is within normal size for your age.
the average is about 12.562 inches
Honestly there is not a real answer to that question. You should not worry about the size of your Penis. Girls don't care about the size, they only care if you know how to use it. The age of the person, race, weight, and height all have something to do with the size. The average american's penis is in between 4.5 inches to 8.5 inches.
If you are 14, you should be keeping your penis in your pants and not worried about weather or not a girl your age would like that. You have other things more important to worry about. Besides in many countries/states sex at that age is illegal.
Your penis should be the size that it is. That's normal for you. At 13, you are just starting puberty and have a fair amount of growing to do overall which is going to include your penis. Everyone is different and all men are not created equal. We all get what we get and shouldn't worry about it. Penis size has nothing to do with who we are or what kind of a life we will have.
No, that is in fact a very tiny penis size. I'm currently 2 1/2 years of age and my penis has grown to the staggering size of 15 inches. Anything that does not at least equal 7 is incredibly small, and the person should perform a "pain olympics" on themselves.
yes...that is normal....It's larger than average but don't worry. most women like them bigger rather than smaller
Five to seven inches is normal. Eight inches is a bit longer then normal.
There is nothing wrong with having an 8 inch penis, though large for your age just enjoy it.