About

Cockpedia is a field guide to the penis written for gay men: how long and thick cocks really are, the shapes, curves, heads and foreskins they come in, and how they work, from the first drop of precum to the time it takes to go again.

The site is organised in three sections, Size, Types and Function, plus shorter in-depth pages on myths, studies and practical questions. The size chart turns the measured data into percentiles you can check against your own numbers.

Where the numbers come from

Every figure on the site comes from a published study, and every page lists its sources at the bottom. We prefer measurements taken by doctors over numbers men report about themselves, because the second kind are reliably bigger. When studies disagree, we say so, and when a popular claim has no study behind it, we say that too.

Lengths and girths can be read in centimetres or inches: the switch at the top of every page changes all of them at once.

Disclaimer

Everything on Cockpedia is based on published scientific studies, listed at the bottom of each page. It is presented for information and entertainment only and is not medical advice. For any problem, doubt or question about your health, always talk to a doctor.