Percentile calculator

Welcome to calcSD, a lightweight website made so you can easily view the rarity of specific dick sizes. Feel free to type different numbers into the calculator as well.

The numbers are compared against a few datasets that each have an specific average and standard deviation. The accuracy of the results depend on the dataset used, you can see more details about each one here.

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NOTE: The website defaults to centimeters as a measurement unit.

Dataset Average Length (SD) Average Girth (SD) Avg. Flaccid Length (SD)
calcSD Average 13.29cm (1.88) 5.23" (0.74) 11.55cm (1.53) 4.55" (0.60) 9.16cm (1.57) 3.61" (0.62)
Veale et al, 2015¹ 13.23cm (1.88) 5.21" (0.74) 11.66cm (1.10) 4.59" (0.43) 9.16cm (1.57) 3.61" (0.62)
Habous et al, 2015 14.34cm (1.86) 5.65" (0.73) 11.50cm (1.74) 4.53" (0.69) N/D N/D
Hungfun's Average 14.61cm (2.10) 5.76" (0.83) 11.87cm (1.37) 4.67" (0.54) 8.58cm (1.73) 3.38" (0.68)

¹This dataset was edited to include stretched flaccid length, which is very close to the erect length, in order to improve reliability.