Urethra Length in Men: Average Size & Anatomy

In adult men, the length of the urethra is typically between 15 to 20 centimeters (or about 6 to 8 inches). It begins at the internal urethral orifice, located at the base of the bladder, and extends through the penis to the external urethral orifice, also known as the meatus, at the tip of the penis.