An online calculator to calculate probabilities associated with normally distributed variables. There are 3 calculators depending on which probability you wish to calculate. You might find small differences between using tables and using these calculators. These are due to round off errors. Let X be a normally distributed variable.
Calculator 1: Find probability P(X < x)
1 - Enter the mean mu, sigma the standard deviation of the normal distribution and x then press "enter".
Calculator 1: Find probability P(x1 < X < x2)
1 - Enter the mean mu, sigma the standard deviation of the normal distribution and x1 and x2 then press "enter".
Calculator 1: Find probabilty P(X > x)
1 - Enter the mean mu, sigma the standard deviation of the normal distribution and x then press "enter".
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