The visible part of the clitoris, called the glans, is roughly the size of a small pea: about 1 to 1.5 centimeters long and 0.5 centimeters wide. But that’s only a fraction of the full structure. The entire clitoris extends internally and measures about 3.5 to 4.25 inches long and 2.5 inches wide, making it comparable in size to a flaccid penis.
The Visible Part: The Glans
The glans clitoris sits at the top of the vulva, where the inner labia meet, just above the urethral opening. It’s the only externally visible portion and the part most people think of as “the clitoris.” On average, the glans is about 5 millimeters long and 3.4 millimeters wide, though older reference ranges list it as up to 1.5 centimeters long. That variation isn’t contradictory. Normal clitoral size varies significantly from person to person, just like other body parts. In clinical settings, a glans length over 13 millimeters is generally considered the threshold for further evaluation, though this is context-dependent.
The glans is partially or fully covered by a fold of skin called the clitoral hood, similar in function to the foreskin. How much of the glans is visible varies widely. In some people, the glans peeks out from the hood; in others, it’s fully covered. This visibility turns out to matter more than you might expect.
The Full Internal Structure
Beneath the surface, the clitoris is a much larger organ than it appears. It has a shaft (called the body) that extends upward and then bends back behind the pubic bone. From there, it splits into two legs (called crura) that flare outward along the pelvic bones, shaped roughly like a wishbone. The clitoris also includes two bulbs of erectile tissue that sit on either side of the vaginal opening. All together, this network of tissue spans about 3.5 to 4.25 inches in length and 2.5 inches in width.
This internal anatomy wasn’t well understood until relatively recently. In 1998, Australian urologist Helen O’Connell published research based on cadaver dissections showing that the clitoris, urethra, and vagina are anatomically connected in ways that previous anatomical descriptions had missed. Her work helped redefine the clitoris as a large, complex organ rather than just a small external nub. A follow-up study in 2005 further mapped these connections, changing how researchers and clinicians think about female sexual anatomy.
Size and Sexual Function
A common assumption is that a larger clitoris would mean stronger orgasms or better sexual response. Research doesn’t support this. A study comparing women with normal orgasmic function to those with orgasmic difficulties found no significant differences in clitoral glans width, length, or hood length between the two groups.
What did make a measurable difference was visibility. In the group with normal orgasmic function, the clitoral glans was visible in 41 out of 51 participants, a rate significantly higher than in the group with orgasmic difficulties. The takeaway: whether the glans is accessible to stimulation appears to matter more than its raw dimensions. This is consistent with the clitoris being the primary source of sexual pleasure, with the glans containing the highest concentration of nerve endings (roughly 8,000) of any structure in the human body.
How Size Changes Over a Lifetime
The clitoris isn’t static. It grows during puberty under the influence of hormones, and it continues to change throughout life. During sexual arousal, the erectile tissue within the clitoris engorges with blood, causing the glans and internal structures to swell, much like an erection. During pregnancy, increased blood flow to the pelvic area can make the clitoris noticeably larger temporarily.
With aging, the tissue composition of the clitoris shifts. In younger women (ages 20 to 40), the clitoris contains about 41% smooth muscle and 24% collagen. After age 60, collagen nearly doubles to around 46%, while smooth muscle and elastic fibers both decrease. In practical terms, this means the tissue becomes less flexible and less responsive to blood flow. Studies have also found that premenopausal women and women with diabetes show reduced smooth muscle thickness, which may affect engorgement and sensation. These are gradual changes, and they vary considerably from person to person, but they help explain why some people notice shifts in sensitivity over time.
Why the Clitoris Was Misunderstood for So Long
For most of medical history, anatomy textbooks either ignored the clitoris or depicted it inaccurately, showing only the glans and omitting the internal structures entirely. Some widely used surgical references through the 1990s didn’t include the clitoral nerves or bulbs in their diagrams. O’Connell’s dissection work in the late 1990s and early 2000s was groundbreaking partly because it simply described, with modern imaging and careful dissection, what was already there. The full 3D structure of the clitoris wasn’t modeled until 2009, and open-access 3D-printable models didn’t become available until 2016.
This history matters because it shaped decades of surgical practice, sex education, and clinical understanding. Procedures near the clitoris, including some common gynecological surgeries, were performed without a complete map of the nerve supply. The relatively recent recognition of the clitoris as a large internal organ has changed how pelvic surgeries are planned and how sexual health is discussed in clinical settings.