The prostate sits about 2 inches inside the rectum, toward the front of the body (the belly-button side). It’s a small, walnut-sized gland that surrounds part of the urethra, just below the bladder. Whether you’re trying to understand a medical exam or locate it on your own, the key is knowing exactly where to feel and what it feels like under your finger.
Where the Prostate Sits
The prostate is positioned between the bladder and the base of the penis, directly in front of the rectal wall. Because of this placement, the back surface of the gland is accessible through the rectum. It wraps around the urethra (the tube urine passes through), which is why an enlarged prostate can interfere with urination.
When you insert a finger into the rectum, the prostate is located on the front wall, meaning the side facing your navel. It’s roughly two finger-joints deep, or about 2 inches in. You won’t feel it on the back wall (the side facing the tailbone) or along the sides.
What It Feels Like
A healthy prostate feels like a smooth, rounded bulge with a slightly firm, rubbery texture. It’s often compared to the tip of your nose in firmness. A normal gland weighs about 25 grams and is roughly the size of a walnut. You should be able to feel a shallow groove running down the middle, dividing it into two symmetrical lobes.
The surrounding rectal tissue is softer and more uniform, so the prostate stands out as a distinct, firmer structure. If it feels very hard, has noticeable lumps, or is significantly larger than a walnut, those are things worth mentioning to a doctor.
Best Positions for Access
Body position makes a real difference in how easy the prostate is to reach. Two positions work best:
- Standing and leaning forward. Stand with your toes pointed slightly inward and lean over a table or countertop. This tilts the pelvis and shortens the distance your finger needs to travel.
- Knee-to-chest. Lie face down on a bed and bring your knees up toward your chest. This opens the rectal canal and brings the prostate closer to the surface.
A third option is lying on your right side with your right leg straight and your left knee pulled up toward your chest. This is common during clinical exams and works fine, though the two positions above tend to give slightly better access to the gland.
Step-by-Step Technique
Start with a generous amount of water-based lubricant on your index finger. Relax as much as possible, then take a slow, deep breath and gently insert the finger pad-side facing your navel (toward the front of the body). Go slowly. The anal sphincter will tense at first, but steady, gentle pressure allows it to relax within a few seconds.
Slide your finger in about 2 inches. At that depth, curl your fingertip slightly forward, toward the belly button, and you should feel a rounded, firm bulge pressing against the front rectal wall. That’s the prostate. It’s distinct enough from the surrounding tissue that most people recognize it once they know what to expect. If you don’t feel it right away, try adjusting your angle slightly or inserting a bit deeper. Body proportions vary, so the exact depth can differ by a small amount from person to person.
How Age and Enlargement Change Things
The prostate grows throughout a man’s life. Before age 40, enlargement rarely causes any noticeable change. After 40, the gland often begins expanding gradually. An enlarged prostate can grow to more than three times its normal size, exceeding 80 grams, and at that point it may feel more like a golf ball than a walnut.
For the purposes of locating it, an enlarged prostate is actually easier to find. The gland becomes more prominent against the rectal wall and you may feel it at a shallower depth. A prostate that feels significantly larger than a walnut, especially if accompanied by urinary symptoms like a weak stream, frequent nighttime trips to the bathroom, or difficulty starting urination, is a sign of benign prostatic hyperplasia (BPH). It’s extremely common in older men and is not the same as prostate cancer, though both can cause the gland to feel different during an exam.
What Doctors Check During a Prostate Exam
A digital rectal exam uses the same basic technique described above. The clinician inserts a lubricated, gloved index finger and palpates the prostate to assess its size, shape, symmetry, and texture. The whole process takes about 10 to 15 seconds. They’re feeling for hard spots, asymmetry, or unusual tenderness that could suggest infection, enlargement, or cancer.
Prostate cancer screening is a separate decision and involves a blood test measuring prostate-specific antigen (PSA). The U.S. Preventive Services Task Force recommends that men between 55 and 69 discuss PSA screening with their doctor individually, weighing the benefits and potential downsides. Men over 70 are generally not recommended for routine PSA screening. African American men and men with a family history of prostate cancer, particularly those with multiple first-degree relatives who had it, face higher risk and may benefit from having that conversation earlier.
Tips for Comfort
The most common reason people have trouble locating the prostate is tension. The pelvic floor muscles tighten when you’re anxious or rushing, which narrows the rectal canal and pushes the prostate slightly out of easy reach. Taking a warm shower beforehand, breathing slowly, and using plenty of lubricant all help significantly. A bearing-down motion, as if having a bowel movement, can also relax the sphincter and make insertion easier.
Trim and file your fingernails short before attempting any internal exam. The rectal lining is delicate, and even a slightly rough nail edge can cause discomfort or small tears. If you’re using a glove, make sure it fits snugly so excess material doesn’t bunch up and create friction.