Normal Distribution Calculator

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Enter the mean and standard deviation for the distribution. Enter the chosen values of x1 and, if required, x2 then press Calculate to calculate the probability that a value chosen at random from the distribution is greater than or less than x1 or x2, or lies between x1 and x2.

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μ Mean
σ Standard Deviation
P(x < x1) probability x is less than x1
P(x > x1) probability x is greater than x1
P(x < x2) probability x is less than x2
P(x > x2) probability x is greater than x2
probability x lies between x1 and x2

Whilst I try to keep the information on this site accurate, I'm only human and I do occasionally make mistakes. I therefore advise you to check any information before using it for anything important. If you do find any errors, please let me know so that I can correct them.

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This page was last changed on: 02 August 2021.

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