 # Standard Normal Distribution Calculator

<-- Enter Z

For t-distribution critical values, use our t-value distribution calculator
For F-distribution critical values, use our F-value distribution calculator
For Χ2-distribution critical values, use our chi-square distribution calculator

### How does the Standard Normal Distribution Calculator work?

Givena normal distribution z-score critical value, this will generate the probability. Uses the NORMSDIST Excel function.
This calculator has 1 input.

### What 1 formula is used for the Standard Normal Distribution Calculator?

1. calculate the right-tailed and left-tailed critical value for Z

For more math formulas, check out our Formula Dossier

### What 5 concepts are covered in the Standard Normal Distribution Calculator?

area
Number of square units covering the shape
critical value
a point on the distribution of the test statistic under the null hypothesis that defines a set of values that call for rejecting the null hypothesis.
normal distribution
an arrangement of a data set in which most values cluster in the middle of the range and the rest taper off symmetrically toward either extreme.
probability
the likelihood of an event happening. This value is always between 0 and 1.
P(Event Happening) = Number of Ways the Even Can Happen / Total Number of Outcomes
standard normal distribution