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13 cm (just over 5") is pretty average. Here are the figures:

  • Before puberty, between 3 and 4 inches erect (8 - 10 cm).
  • After your puberty growth spurt, maybe 4 - 6 inches (10 - 15 cm).
  • It will keep growing through puberty till you are 18 or 19 years old.

Read more:

  • What is the average size of a penis
  • What is puberty

well I'm 15 and mine is about 6 an half inches last time i checked so i don't know what that is in cm and if you haven't got pubes yet it might still grow, are you a virgin because if so and you are too shy don't worry at 13 i lost mine and was probably about your size and she seemed like she enjoyed it so you will get bigger don't worry and don't be shy

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14y ago

What else can I help you with?