Empirical Rule Calculator

Normal-distribution68–95–99.7 rule, not guaranteed for arbitrary distributions.

Normal-distribution68–95–99.7 rule, not guaranteed for arbitrary distributions.

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Result

Enter your values and run the tool to see your result.

How to use this tool

Check the units, enter your values, and run the tool. Results follow the assumptions and method below.

Calculation method

Approx68% interval lowermean-sd
Approx68% interval uppermean+sd
Approx95% interval lowermean-2*sd
Approx95% interval uppermean+2*sd
Approx99.7% interval lowermean-3*sd
Approx99.7% interval uppermean+3*sd

References