What Is Penis Girth—and Why It Matters
Penis girth refers to the circumference of the penis, typically measured around the thickest part of the shaft. While many men focus on length, research shows that girth often plays a bigger role in partner satisfaction and personal confidence.
If you’ve ever wondered whether your girth is “normal,” how to measure it correctly, or if enhancement is possible without surgery, this guide—written by a board-certified urologist—is for you.
Average Penis Girth Size: What’s Normal?
According to international studies, the average penis girth is:
| State | Average Girth |
|---|---|
| Flaccid | 3.7 inches |
| Erect | 4.6 inches |
Keep in mind that these are averages. Many men fall outside of this range and still experience healthy sexual function and satisfaction.
How to Measure Penis Girth Accurately
To get a reliable measurement:
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Use a soft measuring tape or a strip of string.
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Measure around the thickest part of the shaft, either flaccid or erect.
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If using string, mark the length, then lay it flat against a ruler.
🔍 Pro Tip from Dr. Brandeis:
Measure three times at different times of day and average the results. Girth can fluctuate with arousal, temperature, and blood flow.
Why Penis Girth Matters More Than You Think
Multiple studies suggest that penile girth plays a larger role in sexual satisfaction—particularly for partners—than length. Girth enhances sensation during intercourse, boosts confidence, and may even help with certain erectile concerns.
Can You Increase Penis Girth?
Yes—clinically-backed, non-surgical protocols can help increase penis girth safely. As a urologist, I advise patients to stay away from unproven “miracle pills” and instead consider the following science-based options:
Urologist-Recommended Girth Enhancement Options
1. PRP (Platelet-Rich Plasma) Injections
Derived from your own blood, PRP stimulates tissue regeneration and blood flow. It’s used in the P-Long® Protocol, developed specifically for non-surgical enhancement.
2. Vacuum Erection Devices (VEDs)
These devices enhance blood flow and can gradually improve girth with consistent use. We recommend Dr. Joel Kaplan’s FDA-cleared systems.
3. Traction Therapy
Devices like RestoreX® help remodel penile tissue, improve curvature, and increase girth when used regularly.
4. AFFIRM Science Nitric Oxide Supplements
Nitric oxide boosters (such as AFFIRM) can support blood flow, a key component in natural girth improvements.
What Is the P-Long® Protocol?
The P-Long® Protocol is a patented, urologist-developed treatment designed to increase penis length and girth over a 6-month period—without surgery, pills, or injections of foreign substances. With P-Long, patients can expect an average of 1inch in length growth and half inch in girth.
At BrandeisMD, we are proud to offer this science-backed protocol, which combines:
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PRP injections
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RestoreX traction
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Vacuum therapy
✅ Clinical studies show an average increase in girth and length with no reported loss of sensation, erectile function, or adverse effects.
Learn more about P-Long® here.
Frequently Asked Questions
❓Is my girth below average?
Use the table above to compare. Anything under 4.5 inches erect girth is considered slightly below average but not abnormal.
❓Can girth exercises work?
Manual techniques like jelqing lack scientific backing and may cause injury. Always consult a urologist before attempting any enhancement method.
❓Are girth treatments permanent?
Results from PRP-based protocols and traction therapy can be long-lasting, especially when combined with ongoing maintenance and urologist supervision.
Why See a Urologist for Penis Girth Concerns?
As a board-certified urologist, I specialize in male sexual health and performance. Unlike generic online clinics, BrandeisMD provides medical-grade treatments based on science and results, not gimmicks.
If you’re seeking expert guidance on improving penis girth, schedule a private consultation at our San Ramon clinic.
Book a Private Male Enhancement Consultation
📍 BrandeisMD
San Ramon, California
📞 Call: 925-255-7867
