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Penis Size Study for Men

Measure correctly, it only takes a few moments of your time, the study is a global collaboration for men from all over the world to participate. View the images on how to measure on the right if you use a computer and at the bottom of this page if you are on a tablet or smartphone.

Note: The form provides measurements in metric used in most of the world and imperial used in the US and a few other countries provided in parenthesis, so scroll to find your correct measurement when filling out the form.

Section 1. Body size

Select the group that represents you more closely.
How tall are you? Used to see if there is size variation based on the height of a person.
It helps to identify penile length compared to weight averages.

Section 2. Measuring your flaccid penis, non-erect.

You measure from the pubic area to the tip of the glans.

Section 3. Measuring your fully erect penis.

You measure from the pubic area with a full erection to the tip of the glans of the penis or head.

Section 4. Measuring Erect Penis Length (from pubic bone).

You measure from the pubic bone by pressing the ruler against it with a full erection to the tip of the glans of the penis or head.

Section 5. A few questions about your penis length and size.

Section 1. Body Information

In the first section of the penis size questionnaire we have general aspects about us and our body size and weight, fill them out as this help to identify penis size based on place, heritage, and body size.

Nude man measuring his height, weight and ethnic background.

Section 2. Flaccid Penis Length

In the second section of the penis size questionnaire, we are measuring the flaccid penile length. Measure from the pubic area to the tip of the penis.

Flaccid penis length measured from the pubic area to the tip of the penis.

Section 3. Erect Penis Length

In the third section, we will measure the erect penis length. With a full erection, measure from the pubic area to the tip of the glans, ruler is placed on the top of the penis.

Erect penis measuring from the pubic area to the tip of the glans with an erect penis.

Section 4. Erect Penis Length (from pubic bone)

In the fourth section, we will measure the erect penis length from the pubic bone, this will be the longest length you will get. With a full erection, press the ruler into the pubic bone until you feel it, now measure to the tip of the glans.

Erect penis measuring to the pubic bone by pressing the ruler against the bone.

Genital Size logo featuring a ruler used in measuring genital size and length

→  Contribute to our anonymous online surveys exploring diverse perspectives on sexuality. Open to all people from around the world—your insights and size shape our understanding of our bodies' differences!

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