Z-Score to Percentile Calculator

Jeff Sauro, PhD

Enter a z-critical value and get the area under the normal curve (a percentage). Selecting two-sided provides the area above Z and below -Z.



 Shaded area is % of the area under the curve.Shaded area is % of the area under the curve.
Z-ScorePercent of Area100-Percent

Download this calculator in an excel file or take a Crash course in Z-scores



Watch a Short Demo


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