Tanner Stage Calculator for Boys
This is an experimental program attempting to determine your stage of development. The results will only be as accurate as the answers which you give. Do not expect this to substitute for the accurate answers a doctor could give you concerning your development. This tool makes no record of the information given unless you choose to submit a correction at the end.
In some sections there might be multiple answers which describe you. If that is the case, select the one furthest down the list that still describes you.