Urination doesn’t require a penis. The penis plays a role in directing the urine stream, but the actual mechanics of emptying the bladder are identical regardless of genital anatomy. Everyone uses the same internal system: a bladder that contracts, sphincters that relax, and a urethra that carries urine out of the body. The difference comes down to where the urethra opens and how long it is.
How Urination Actually Works
Your bladder is a muscular sac that stretches as it fills with urine. When it reaches a certain volume, nerve signals travel up to a control center in your brainstem, which coordinates the whole process. First, the ring-shaped sphincter muscles around your urethra relax and open. A fraction of a second later, the bladder wall contracts, squeezing urine out through the urethra. This coordination between relaxing the “gate” and squeezing the “reservoir” is what produces a urine stream.
You also have voluntary control over part of this system. The external sphincter and pelvic floor muscles (a hammock-like layer of muscle at the base of your pelvis) can be consciously tightened to hold urine in or relaxed to let it flow. This is why you can delay urination when your bladder signals it’s full, and why pelvic floor exercises help people who struggle with leakage. None of this machinery lives in the penis. It all sits deeper in the body, shared across all anatomies.
Where Urine Exits Without a Penis
In people without a penis, the urethra is about 4 centimeters (roughly 1.5 inches) long, compared to about 22 centimeters in people with one. It opens at a small hole called the urethral meatus, located in the vulvar vestibule, the smooth area between the inner labia. Specifically, the opening sits just behind the clitoris and in front of the vaginal opening. It’s a separate hole from the vagina, though the two are close together.
Because the urethra is short and opens downward rather than extending outward, urine exits the body in a less directed stream. This is the primary reason most people without a penis sit or squat to urinate: it’s not a biological requirement, it’s a matter of aim and gravity. Sitting positions the urethra over the toilet, and gravity does the rest. The bladder contracts in exactly the same way.
The Shorter Urethra and UTI Risk
One practical health consequence of a shorter urethra is a higher risk of urinary tract infections. Because the urethra is only about 4 centimeters long and sits close to the rectum, bacteria have a shorter path to travel before reaching the bladder. This is the main reason UTIs are significantly more common in people without a penis. Wiping front to back, staying hydrated, and urinating after sex all help reduce that risk by flushing bacteria out before they can travel upward.
Standing to Pee Without a Penis
Some people without a penis want or need to urinate while standing, whether for convenience, comfort, or gender expression. There are a few ways this works.
Stand-to-pee (STP) devices: These are funnel-shaped tools, typically made from medical-grade silicone, that fit against the body and direct the urine stream forward and downward. Brands like GoGirl use a shape modeled on vulvar anatomy with a built-in splash guard. Some are reusable, others disposable. The concept is simple: a channel catches urine as it exits the urethral opening and directs it away from the body, mimicking the directional function of a penis. Even a square of stiff paper folded into a funnel shape can work in a pinch.
Technique alone: Some people learn to stand and urinate without any device by using their fingers to separate the labia and direct the stream, though this takes practice and doesn’t work reliably for everyone.
Urination After Gender-Affirming Surgery
For transgender men and nonbinary people who pursue genital surgery, urination is a significant part of surgical planning. The options vary depending on the procedure and whether urethral lengthening is included.
In metoidioplasty (which uses existing genital tissue to create a small phallus), surgeons can extend the urethra so it opens at the tip. When urethral lengthening is included, 87 to 100 percent of patients are able to urinate while standing, though this is difficult to guarantee before surgery. Some people opt for a simple metoidioplasty without urethral lengthening, in which case the urethral opening stays in its original position.
Phalloplasty (which constructs a full-sized penis, usually from tissue taken from the forearm or thigh) involves a more complex urethral reconstruction. Surgeons build a new urethral channel through the length of the constructed penis by connecting it to the native urethra. One common post-surgical reality is post-void dribbling: because the reconstructed penis doesn’t have the muscles that naturally squeeze residual urine out, patients typically need to manually press along the length of the urethra after urinating to empty it completely. People who’ve had this surgery often describe the technique as “milking” urine from the base to the tip.
Phalloplasty can also be performed without urethral lengthening. In that case, the person urinates from their original urethral position, which may mean continuing to sit.
Why Sitting Is Not a Limitation
Sitting to urinate is often framed as a disadvantage, but from a physiological standpoint, it allows gravity to assist with complete bladder emptying and relaxes the pelvic floor more naturally than standing. Research on people with prostates has actually shown that sitting can improve urinary flow in those with lower urinary tract symptoms. For people without a penis, sitting is simply the most efficient alignment of anatomy and gravity. The bladder empties just as completely, and in many cases more completely, than it does during standing urination.