used more than 60 million times!

Formulas: Cumulative Distribution Function (CDF) for the Standard Normal Distribution

Cumulative Distribution Function (CDF) for the Standard Normal Distribution Formulas

Below you will find descriptions and details for the 2 formulas that are used to compute cumulative distribution function (CDF) values for the standard normal distribution.

Error function:
Error function formula
Standard normal distribution cumulative distribution function (CDF):
Standard normal distribution cumulative distribution function (CDF) formula
where erf is the error function.
Related Resources
Calculator Formulas References Related Calculators Search