5 Essential Facts About the Clitoris You Should Know

Let’s talk about the clitoris, shall we? Despite being the only organ in the human body designed purely for pleasure (yes, really!), the clitoris has been woefully misunderstood, under-researched, and frankly, ignored for far too long.

As a sex and relationship therapist, I’ve lost count of the number of people who come to me confused about their own anatomy or their partner’s. And honestly? That’s not surprising when you consider that comprehensive research into clitoral anatomy only really kicked off in the late 1990s. The 1990s. We’ve been to space, invented the internet, and yet we’re still catching up on understanding half the population’s pleasure anatomy.

So let’s change that. Here are five essential facts about the clitoris that everyone should know, whether you have one, you’re intimate with someone who has one, or you’re just curious about human anatomy. Because knowledge is power, and when it comes to pleasure and sexual health, we all deserve to be properly informed.

1. The Clitoris Has Over 10,000 Nerve Endings

You’ve probably heard that the clitoris has around 8,000 nerve endings, roughly double that of the penis. Well, here’s the thing: that “fact” was based on research conducted on cows. Yes, you read that correctly. For decades, our understanding of human clitoral sensitivity was extrapolated from bovine anatomy because, apparently, researching actual human clitorises wasn’t a priority.

Thankfully, Dr. Blair Peters (also known as The Queer Surgeon) from OHSU Department of Urology decided that wasn’t good enough. In 2022, they conducted the first proper anatomical study using human clitoral tissue and discovered that the clitoris actually has over 10,000 nerve endings. That’s not just “more than we thought,” that’s an entire 25% more nerve endings than previously believed.

Why does this matter? Because it highlights both the incredible capacity for pleasure that clitoral stimulation can provide and the shocking lack of research into reproductive anatomy. It also explains why clitoral stimulation feels so intense and why around 70-80% of people with vulvas need some form of clitoral stimulation to reach orgasm. Those nerve endings aren’t there for decoration, they’re there to make you feel bloody good.

This also means that everyone’s clitoral sensitivity can vary quite dramatically. Some people find direct clitoral touch overwhelming (hello, 10,000+ nerve endings in a tiny space), whilst others need firmer pressure. There’s no “normal” when it comes to what feels good, and that’s perfectly fine.

2. The Clitoris Is Like an Iceberg: Most of It Is Internal

Here’s where things get really interesting. When most people think about the clitoris, they’re only thinking about the glans (the visible external bit). But that’s just the tip of a much larger structure. The clitoris is actually an internal organ that can range from 7-12cm in length, with most of that hidden beneath the surface.

Think of it like an iceberg: what you can see is only about 10-20% of what’s actually there. The clitoris extends internally in a wishbone shape, with two “legs” (called crura) and two bulbs (the vestibular bulbs) that run alongside the vaginal opening and swell with blood during arousal.

This changes everything. Understanding the full structure of the clitoris helps explain why different types of touch and stimulation can feel pleasurable. When someone experiences pleasure from penetration, it’s often because the internal structures of the clitoris are being stimulated indirectly through the vaginal walls. The elusive “G-spot”? It’s likely the internal portion of the clitoris being stimulated from inside the vagina.

This also explains why approximately 10-15% of people with vulvas can orgasm from penetration alone. It’s not that they’re anatomically “different” or more sexually advanced, it’s simply that their internal clitoral structures may be positioned in a way that makes them more easily stimulated during penetration. For the remaining 85-90%, external clitoral stimulation is perfectly normal and necessary.

The full clitoral structure wasn’t even properly mapped using modern imaging techniques until 2005 by Australian urologist Dr. Helen O’Connell. Two thousand and five. Let that sink in. We’ve known more about the surface of Mars than we have about the clitoris for most of modern history.

3. The Clitoris Grows When Aroused and Throughout Your Lifetime

Just like a penis, the clitoris becomes engorged with blood and increases in size when you’re aroused. This is called tumescence, and it’s the clitoral equivalent of an erection. The clitoral glans can double or even triple in size during arousal, whilst the internal structures also swell significantly.

But here’s something many people don’t know: the clitoris never stops growing throughout your life. Unlike most of your body parts, which reach their full size by the end of puberty, the clitoris continues to grow (albeit slowly) throughout your entire lifespan.

Research has shown that by the time someone reaches their 90s, their clitoris could be 2.5 times the size it was when they were 18. This happens regardless of hormone levels or sexual activity, it’s just a natural part of ageing.

What does this mean practically? A few things:

• What felt good at 20 might feel different at 40 or 60, not just because of life changes or hormones, but because your anatomy has literally changed
• Clitoral sensitivity can change over time, which is completely normal
• If you notice your clitoris looking or feeling different as you age, that’s expected and healthy

It’s also worth noting that hormone therapy (particularly testosterone) can cause the clitoris to grow more noticeably. For trans masculine and non-binary people on testosterone, the clitoris typically grows within the first year of hormone therapy, sometimes significantly. This is often called “bottom growth” and is a normal and expected change.

If you’re experiencing changes in your genital anatomy that concern you, speaking with a psychosexual therapist or visiting a sexual health service can provide reassurance and support.

4. The Clitoris and Penis Are Remarkably Similar

This is where embryology gets fascinating. All human embryos start out with the same genital tissue, and for the first 9 weeks of development, we’re all essentially identical in this regard. What eventually becomes either a penis or a clitoris begins as the same structure called the genital tubercle.

Around 9 weeks into development, hormones (primarily androgens) determine which path the development takes:

• The genital tubercle becomes either the glans of the penis or the glans of the clitoris
• The urogenital folds either fuse to become the shaft of the penis or remain separate to become the inner labia
• The labioscrotal swellings either fuse to become the scrotum (which is why you can often see a line running down the middle of the scrotum – that’s where it fused) or remain separate to become the outer labia

This shared origin means that the clitoris and penis have incredibly similar structures:

• Both have a glans (head)
• Both have erectile tissue that engorges with blood during arousal
• Both are packed with nerve endings
• Both have a foreskin (the clitoral hood is directly analogous to the penile foreskin)
• Both can produce smegma (a natural, healthy secretion)

Why is this important? Because it demolishes the outdated idea that “male” and “female” bodies are fundamentally different or opposite. We’re variations on the same theme, which makes conversations about pleasure, anatomy, and sexual health much more inclusive and accurate.

This similarity is also why gender-affirming surgeries like metoidioplasty (creating a penis from clitoral tissue with testosterone-induced growth) and vaginoplasty (creating a vulva using penile and scrotal tissue) are possible. The tissues are so similar that they can be reconfigured because they came from the same embryological origin.

It’s also important to acknowledge that not everyone’s development follows this binary path. Some people are born with genitalia that don’t fit typical definitions of “male” or “female” anatomy, a natural variation known as being intersex. This can include variations like an enlarged clitoris, fused labia, or ambiguous genital structures. Being intersex is a naturally occurring variation in human development, occurring in approximately 1.7% of the population, similar to the number of people born with red hair.

5. Clitoral Anatomy Varies More Than You Think

Here’s something that doesn’t get talked about enough: clitorises vary enormously from person to person, and all of these variations are completely normal.

The external glans can be anywhere from a few millimeters to over a centimeter in length. Some clitoral hoods completely cover the glans, whilst others are more retracted. Some clitorises are more prominently visible, whilst others are tucked away. The internal structures also vary in size, shape, and positioning.

This variation is influenced by genetics, hormones, age, and individual development. There’s no “ideal” or “perfect” clitoris, despite what some corners of the internet might suggest. Every vulva is unique, and that includes the clitoris.

This matters because:

• What works for one person won’t necessarily work for another
• Comparison is pointless and harmful – your anatomy is meant to look the way it does
• Understanding your own unique anatomy is key to experiencing pleasure
• Partners need to communicate rather than assuming they know what will work

If you’re curious about your own anatomy, grab a mirror and have a look. Seriously. Knowing what your body looks like and where everything is located isn’t weird or inappropriate, it’s basic body literacy. How can you tell a partner what feels good if you’re not familiar with your own anatomy?

For some people, this exploration might bring up feelings of shame or discomfort, especially if you’ve grown up with messaging that your genitals are “dirty” or “inappropriate.” If you’re struggling with these feelings, working with a psychosexual therapist can help you develop a healthier, shame-free relationship with your body.

The Bottom Line

The clitoris is an incredible organ that deserves far more attention, research, and celebration than it’s historically received. Whether you have one yourself or you’re intimate with someone who does, understanding clitoral anatomy helps create better sexual experiences, more effective communication, and a shame-free approach to pleasure.

Remember: there’s no “normal” when it comes to bodies and pleasure. What matters is what feels good for you, what’s healthy, and what’s consensual. Your clitoris, however it looks, wherever it’s positioned, however sensitive or not it is, is perfect exactly as it is.

And if anyone ever makes you feel ashamed of your body or your pleasure, send them this article. Better yet, send them packing.

Frequently Asked Questions

How big is the average clitoris?

The external glans of the clitoris typically ranges from 5mm to 35mm in length, whilst the entire clitoral structure (including the internal portions) is usually between 7-12cm. However, “average” doesn’t mean “normal” – there’s huge natural variation, and size doesn’t correlate with sensitivity or pleasure. Your clitoris is the perfect size for your body.

Where exactly is the clitoris located?

The visible part of the clitoris (the glans) is located at the top of the vulva, where the inner labia meet, protected by the clitoral hood. The internal structures extend downwards and back in a wishbone shape on either side of the vaginal opening. If you’re struggling to locate it on yourself or a partner, think of it as being at the “12 o’clock” position if the vaginal opening is at “6 o’clock.”

Why does my clitoris sometimes feel too sensitive to touch?

With over 10,000 nerve endings packed into a small area, it’s completely normal for direct clitoral touch to feel overwhelming, especially when highly aroused or immediately after orgasm. Some people prefer indirect stimulation through the clitoral hood, lighter pressure, or stimulation around (rather than directly on) the clitoris. Sensitivity can also vary with your menstrual cycle, stress levels, and how aroused you are. Communication and experimentation are key to finding what feels best.

Can the clitoris be too small or too large?

Unless there’s an underlying medical condition (which is rare), there’s no such thing as a clitoris being “too small” or “too large.” The huge natural variation in clitoral size is exactly that – natural. Concerns about clitoral size are often rooted in shame or unrealistic expectations from limited representation in media and education. If you’re genuinely concerned about your anatomy, speak with a healthcare provider or sexual health service, but remember that variation is normal and healthy.

Does clitoral stimulation feel the same for everyone?

Absolutely not. With so much anatomical variation, what feels incredible for one person might feel uncomfortable or even painful for another. Some people need direct, firm pressure, whilst others prefer light, indirect touch. Some people love vibrators, whilst others find them too intense. There’s also variation in whether people prefer circular motions, up-and-down strokes, or side-to-side movements. The only way to know what works for you or your partner is through communication, exploration, and being open to the fact that preferences can change over time.

How do I talk to my partner about clitoral stimulation?

Start with the assumption that your partner wants to make you feel good and that communication makes sex better for everyone involved. You might say something like “I really love it when you touch me here” or “Could you try a bit lighter/firmer pressure?” or “Would you be open to trying something different?” If you’re the partner, asking “Does this feel good?” or “What would feel even better?” shows you care about their pleasure. Remember, bodies change, so what worked last time might not work this time. Ongoing communication isn’t a failure, it’s the foundation of great sex.

Can the clitoris stop working or become less sensitive?

The clitoris doesn’t typically “stop working,” but sensitivity can change due to various factors including hormones, medications (particularly some antidepressants), stress, relationship dynamics, or health conditions. Menopause can affect clitoral sensitivity due to hormonal changes and potential tissue thinning. If you’ve noticed a significant change in sensation that’s concerning you, it’s worth speaking with a healthcare provider or sexual health service. In many cases, concerns about clitoral sensitivity are actually about arousal, stress, or relationship factors rather than physical changes.

Is it normal for my clitoris to get hard when I’m turned on?

Yes, absolutely. The clitoris has erectile tissue just like a penis, so when you’re aroused, it becomes engorged with blood and increases in size. You might notice the glans becoming firmer, more prominent, or even poking out from under the clitoral hood. The internal structures also swell significantly, though you obviously can’t see this happening. This is a completely normal physiological response to arousal.

References

Peters, B. R., et al. (2022). “Gross Anatomical Analysis of the Dorsal Distribution of Clitoral Nerves: A Cadaveric Study.” Sexual Medicine.

O’Connell, H. E., et al. (2005). “Anatomical Relationship Between the Urethra and Clitoris.” Journal of Urology.

Lloyd, E. A. (2005). The Case of the Female Orgasm: Bias in the Science of Evolution. Harvard University Press.

Baskin, L. S., et al. (2018). “Human Embryonic Development of the External Genitalia.” Differentiation.

Puppo, V., & Gruenwald, I. (2012). “Does the G-Spot Exist? A Review of the Current Literature.” International Urogynecology Journal.

Di Marino, V., & Lepidi, H. (2014). Anatomic Study of the Clitoris and the Bulbo-Clitoral Organ. Springer.