Can you tell me about the common penis length according to different ages?

Why do you ask?: If it's a boy before puberty, there's no point in measuring. It's not going to predict anything. If you're an older adolescent or adult, here's what you need to know. Average is a bit over five inches. Three-even is enough to make most women happy, and a smaller one gets harder and is better to stimulating her best nerve endings in the front. Big, like on the internet, has serious disadvantages.