From where should I measure my penis?

Proper Technique for Measuring Penile Length

The most accurate method to measure penile length is from the pubic bone to the tip of the glans penis (BTT method) with the penis in a stretched state, as this provides the most reliable and reproducible measurements.

Anatomical Considerations

When measuring penile length, it's important to understand the relevant anatomy:

• The penis consists of the shaft and the glans (head)
• The corona is the ridge that forms the border between the glans and the shaft
• The pubic bone serves as the fixed anatomical landmark for proper measurement

Correct Measurement Technique

Standard Clinical Method:

1. Measure in a private, comfortable environment (ideally temperature-controlled at ~21°C) 1
2. Position: Standing position is preferred
3. Starting point: Press firmly against the pubic bone (not just the skin) to compress the fat pad
4. Stretch the penis gently to its maximum non-painful length
5. Measure along the dorsal (top) surface to the tip of the glans

Key Points:

• Bone-to-tip (BTT) measurement is superior to skin-to-tip (STT) measurement, particularly in overweight patients where the pubic fat pad can hide penile length 1
• Flaccid stretched measurements typically underestimate erect length by approximately 20% 1
• Measurements should be taken with a rigid ruler, not a flexible tape measure

Common Pitfalls to Avoid

• Starting at the skin surface: This leads to significant underestimation, especially in overweight individuals
• Insufficient compression of the fat pad: Fails to account for the "hidden" portion of the penis
• Measuring along the side or underside: Creates inconsistent results
• Inadequate stretching: Results in falsely short measurements
• Measuring in cold environments: May cause penile retraction and inaccurate results

Clinical Relevance

Accurate penile measurements are important in several clinical contexts:

• Evaluation of micropenis or other penile abnormalities
• Pre-surgical assessment for procedures like penile implants
• Monitoring of conditions like Peyronie's disease 2
• Baseline documentation for erectile dysfunction treatment 2

Evidence Quality

Research shows significant variability in measurement techniques among clinicians. A survey found that while most clinicians (64%) would measure from the pubic bone to the tip with the penis in a stretched position, 45% did not routinely perform standardized penile measurements 3. This highlights the need for consistent methodology.

The most recent and comprehensive study on this topic (201 men) confirmed that bone-to-tip measurements are more accurate and reliable than skin-to-tip measurements, with the discrepancy being most notable in overweight patients 1.

By following these evidence-based guidelines for penile measurement, you can ensure accurate and consistent results that properly reflect true penile dimensions.