Penis Size Calculator with Visualizer for Comparison to Others

Understanding Average Sizes Used in the Calculator

Most men wonder how their penis size compares to the average. Generally, the average erect penis is about 5.1 inches in length and 4.6 inches in girth. Average however, does not equal "normal." There are standard distributions from average that dictate the measurements that 66%, 90%, 95% and 99% will have as well. "Normal" can likely be considered anywhere within the 99th percentile meaning 1 out of 100 would be out of that range.

Where these averages come from

The averages and percentiles above are taken from the largest systematic review available — nomograms built from up to 15,521 men, each measured by a health professional rather than self-reported. That review puts average erect length at 5.16″ (SD 0.62″) and average erect girth at 4.59″ (SD 0.52″), the figures this calculator uses.

Reference: Veale D, Miles S, Bramley S, Muir G, Hodsoll J. Am I normal? A systematic review and construction of nomograms for flaccid and erect penis length and circumference in up to 15,521 men. BJU International, 2015;115(6):978–986. doi:10.1111/bju.13010

One caveat worth knowing: the review is strongest for flaccid measurements. The erect-girth figure comes from a much smaller subset of the men studied, so treat erect-girth percentiles as a useful guide rather than an exact ranking.

What Are Penis Enlargement Injections?

Penis enlargement injections are a non-surgical technique that uses hyaluronic acid fillers to increase penis girth. Filler does not increase erect length; it can add flaccid length, because the added volume stops full retraction. Every procedure is performed by, or under the supervision of, a licensed physician who has completed the Urosculpt™ Certification Program.

UroSculpt™ certification is a training credential (course and assessment), not a license or a medical-specialty board certification; UroSculpt does not supervise, employ or audit providers.