How long is average for my age?

dont worry about that if you find the right girl she should like you for you and not your dick

Sounds very normal. Some are large when they’re flaccid, and just get harder, not much bigger. Others are tiny like a finger and grow into giant things. And all that’s in between those two extremes is perfectly ok and lots of fun :)

No such thing as normal, but as for average, it looks like that is 6 inches:

Here are the statistics on erect pens lengths for white college men, in quarter-inch lengths measured by The Alfred C. Kinsey Institute for Sex Research (from the point where the pens meets the body along the top to its tip):

Percent length 0.2 percent 3.75 inches 0.3 percent 4 inches 0.2 percent 4.25 inches 1.7 percent 4.5 inches 0.8 percent 4.75 inches 4.2 percent 5 inches 4.4 percent 5.25 inches 10.7 percent 5.5 inches 8 percent 5.75 inches 23.9 percent 6 inches 8.8 percent 6.25 inches 14.3 percent 6.5 inches 5.7 percent 6.75 inches 9.5 percent 7 inches 1.8 percent 7.25 inches 2.9 percent 7.5 inches 1 percent 7.75 inches 1 percent 8 inches 0.3 percent 8.25 inches 0.3 percent 8.5 inches 0.1 percent 8.75 inches 0.1 percent 9 inches

(note: 1 inch = 2.54 cm, 0.25 inch = 0.635 cm)

5 1/2 is exactly average for men 13+, according to the infallible wiki. (no link, since ithe wiki contains graphic pictures)