1. Health

What size should an erect penis be?


Updated May 21, 2014

Man looking at mobile phone in bed
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Question: What size should an erect penis be?
Answer: The penis is capable of lengthening and increasing in overall size during sexual arousal. The longest fully erect penis (scientifically validated) is 12 inches (30cms). The smallest normally functioning penis ½ inch (1.3cms). The average erect penis size is around 6 inches.

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