calcSD

Penis Percentile Calculator
This is an outdated version of calcSD. It will no longer receive any updates.

Chart Calculator

This is an experiment, it's a more visual and interactive version of the main calculator.

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AVERAGE
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STANDARD DEVIATION
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YOUR SIZE
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PERCENTILE
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Z-SCORE
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WOULD BE BIGGER IN A ROOM OF 1000
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TIMES THE AVERAGE SIZE
CLASSIFICATION

Don't know your volume? Calculate it below:


Color Z-Score % of people
-6.2 and below 1 in billions
-6.2 to -2.5 0.62%
-2.5 to -2 1.65%
-2 to -1 13.59%
-1 to +1 68.27%
+1 to +2 13.59%
+2 to +2.5 1.65%
+2.5 to +4 0.62%
+4 to +6.2 0.003%
+6.2 and above 1 in billions