Many boys want to know the average penis size for their age group. But you have to realise that some penises already start growing when a boy is ten, while others have to wait till they are 14. So don’t be disappointed if yours is smaller than average. It can all change. Real comparison is only possible after you turned 17. Nevertheless some figures to satisfy your curiosity. Survey results differ, so with length I’ll give you two figures. The average lies probably somewhere in between:

     Average length (erect)       Average girth (erect)
                      Inch           centimetres               Inch    centimeters
12 jaar:          2,8- 4,8           7 - 12,2                    3            7,6
13 jaar:          3,3-5,3            8,7- 13,5         .        3,9         9,9
14 jaar:          3,9-5,7            9,8 - 14,5                 4          10,1
15 jaar:          4,7-6               12 - 15,3                  4,2       10,6
16 jaar:          4,9-6,2            12,5 - 15,7               4,3       11,0
17 jaar:          5,3-6,3            13,5 - 15,9               4,3       10,9
18 jaar:          5,3-6,3            13,5 - 16                  4,6       11,7