How to Measure Penis Size: Length, Girth & Myths Debunked

The Popstar Penis Measurement Guide: Size Matters (But Not How You Think)

Written by: Dr. Brian Steixner

Key Takeaways

Accurate Measurement Matters: For health, confidence, and compatibility.

Most Men Are Within the Average Range: Size varies, but extremes are rare.

Technique Over Size: Satisfaction often depends more on skill and connection.

Consult Professionals for Concerns: Don't rely solely on online information.

Let’s face it: when it comes to penis size, most of us have questions. Whether you're a grower, a shower, or somewhere in between, understanding your measurements can help with everything from condom fit to confidence in the bedroom. So, grab a ruler (or a measuring tape) and let’s get down to the nitty-gritty.

Why Measure Your Penis?

Measuring your penis isn't just about satisfying curiosity. It can help:

  • Ease Anxiety: Knowing where you stand can alleviate unnecessary worries.

  • Improve Condom Fit: Proper measurements ensure better protection and comfort.

  • Monitor Changes: Tracking size can be important if you're undergoing hormone therapy or other treatments.

The Optical Illusions of Penis Size

Before you measure, consider these factors that can distort perception:

  • Pubic Fat Pad: Even in lean individuals, some length can be hidden beneath the skin.

  • Erection Angle: A steep upward curve can make the penis appear shorter from certain angles.

  • Grower vs. Shower: Flaccid size doesn't always predict erect size. Some men experience significant growth when aroused.

To get an accurate measurement, experts recommend the Bone-Pressed Erect Length (BPEL) method. This involves pressing a ruler against the pubic bone at the base of the erect penis to account for any hidden length.

Tools You'll Need

  1. Rigid Ruler: At least 20 cm (8 inches) long.
  2. Measuring Tape or Non-Stretchy String: For measuring girth.
  3. Mirror: To ensure proper alignment.
  4. Warm Environment: Temperature can affect size, so measure in a comfortable setting.

Setting the Stage

  • Empty Your Bladder: For comfort.
  • Warm Up: A warm shower can help relax tissues.
  • Achieve Full Erection: For the most accurate measurement.
  • Stand Upright: Posture can influence measurements.

Measuring Length

Bone-Pressed Erect Length (BPEL)

  1. Position the Ruler: Place it along the top of your erect penis.
  2. Press to the Pubic Bone: Apply firm pressure to flatten the fat pad.
  3. Measure to the Tip: Exclude any overhanging foreskin.
  4. Record the Measurement: Note the length in millimeters or inches.

Stretched Flaccid Length (SFL)

If achieving an erection is challenging:

  1. Stretch the Penis: Gently pull it straight out.
  2. Measure as Above: Use the same method as BPEL.
  3. Record the Measurement: This can approximate erect length.

Measuring Girth

  1. Wrap Measuring Tape: Around the mid-shaft of your erect penis.
  2. Ensure a Snug Fit: Not too tight, just enough to stay in place.
  3. Record the Measurement: Note the circumference.
  4. Repeat: Measure near the base and just behind the glans for comparison.

Repeat for Accuracy

Penis size can vary due to factors like temperature and stress. To get a reliable measurement:

  • Measure on Three Separate Days: Under similar conditions.

  • Calculate the Average: This provides a more accurate representation.

What the Research Says About “Average”

Studies involving thousands of men have found:

Average Erect Length: Approximately 13.12 cm (5.17 inches).

Average Erect Girth: About 11.66 cm (4.59 inches).

Most men fall within a narrow range around these averages. Self-reported measurements tend to be larger due to overestimation.

Understanding Percentiles

Top 10%: Erect length over 16 cm (6.3 inches).

Bottom 10%: Erect length under 11 cm (4.3 inches).

These figures help contextualize where you stand but don't determine sexual satisfaction or prowess.

Translating Numbers into Labels

  • Micropenis: Defined as an erect length under 9.3 cm (3.7 inches).
  • Below Average: Erect length under 11 cm (4.3 inches).
  • Average: Erect length between 11 cm and 16 cm (4.3–6.3 inches).
  • Large: Erect length over 16 cm (6.3 inches).

Remember, these are statistical categories, not judgments.

Common Measurement Mistakes to Avoid

  • Measuring Along the Side: Can add phantom centimeters due to curvature.
  • Using a Soft Ruler: May sag and shorten the apparent length.
  • Skipping the Bone Press: The fat pad can hide up to 2 cm (0.8 inches).
  • Partial Erection: Can result in inaccurate measurements.
  • Including Foreskin: Measurements should stop at the glans tip.

Sexual Satisfaction and Perception

Surveys indicate that most partners are satisfied with average-sized penises. In fact, technique, emotional connection, and communication often play more significant roles in sexual satisfaction than size alone.

When Size Signals a Medical Issue

Peyronie’s Disease: Characterized by sudden curvature or painful erections.

Buried Penis: Often due to significant weight gain.

Hormonal Disorders: Can affect development and size.

If you notice sudden changes or have concerns, consult a healthcare professional.

Debunking Common Penis Size Myths

  • Foot, Hand, or Nose Size Predicts Penis Size: 
    No scientific correlation.
  • Bigger is Always Better: 
    Satisfaction is more about compatibility and technique
  • Pills and Lotions Increase Size Permanently: 
    Most lack scientific backing.
  • Circumcision Changes Length: 
    No significant difference post-healing.

Condom Size Made Simple

Choosing the right condom size ensures comfort and effectiveness:

Standard Condoms: Suitable for girth up to 11 cm (4.3 inches).

Large or XL Condoms: For girth over 11 cm (4.3 inches).

Length Considerations: If your penis is longer than 17 cm (6.7 inches), look for longer condoms.

The Whole Picture in Seven Short Rules

  1. Measure in Warm, Private Conditions.
  2. Use a Rigid Ruler for Length and Flexible Tape for Girth.
  3. Average Measurements Over Three Days.
  4. Understand the Global Averages.
  5. Recognize the Normal Range.
  6. Focus on Confidence and Communication.
  7. Remember: Size Isn't Everything.

Frequently Asked Questions

Q: How do I measure my penis length at home?

A: Use a rigid ruler, press it against the pubic bone along the top of your erect penis, and measure to the tip, excluding any foreskin.

Q: What is the average erect penis length?

A: Approximately 13.12 cm (5.17 inches).

Q: How do I measure penis girth?

A: Wrap a flexible measuring tape around the mid-shaft of your erect penis and note the circumference.

Q: What is a micropenis?

A: An erect penis length under 9.3 cm (3.7 inches), often due to hormonal factors.

Q: Does penis size affect sexual satisfaction?

A: Not significantly. Factors like technique, emotional connection, and communication play larger roles.

Q: How do I choose the right condom size?

A: Measure your erect penis's girth and length, then refer to condom size charts to find the best fit.

Dr. Joshua Gonzalez

Dr. Joshua Gonzalez

Dr. Joshua Gonzalez is a board-certified urologist who is fellowship-trained in Sexual Medicine and specializes in the management of male and female sexual dysfunctions. He completed his medical education at Columbia University and his urological residency at the Mount Sinai Medical Center. Throughout his career, Dr. Gonzalez has focused on advocating for sexual health and providing improved healthcare to the LGBTQ+ community.

Dr. Brian Steixner

Dr. Brian Steixner

Dr. Brian Steixner is a board-certified urologist and an expert in men’s sexual medicine. He completed his General Surgery and Urology training at The University of Pennsylvania and The Children’s Hospital of Philadelphia, one of the busiest and most comprehensive programs in the nation. During his career, Brian has treated thousands of men with sexual health issues including male factor infertility.