Normal Distribution

Empirical Rule Calculator

Use this empirical rule calculator to find the values that fall within 1, 2, and 3 standard deviations of the mean. Enter the mean and standard deviation, then click Calculate to see the 68-95-99.7 rule ranges with a step-by-step solution.

About This Calculator

Prepared by Joseph Mburu · Updated on June 11, 2026

Joseph is an applied statistician and data analyst with over 6 years of experience helping students, researchers, and professionals solve statistics and data analysis problems. He holds a degree in Applied Statistics and a Master’s degree in Data…

We aim to keep our calculators accurate, easy to use, and helpful for learning. Always check that your inputs match the assumptions of the method you are using.