calcSD

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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Make sure you're using the right measurement unit and also that you're measuring yourself correctly.
Dataset:

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.