Z-Score Calculator
Calculate the z-score of a value in a normal distribution.
Result
Results are estimates for general information only and are not professional advice.
Z-scores
A z-score tells you how many standard deviations a value is from the mean: z = (x − μ) ÷ σ. It is used to compare values from different distributions and to find probabilities in statistics.
Frequently Asked Questions
What is the Z-Score Calculator?
Calculate the z-score of a value in a normal distribution. It runs instantly in your browser and is completely free.
Is the Z-Score Calculator free and does it require signup?
Yes. Every calculator on Calculatis is 100% free with no registration, and the values you enter are never stored.
How accurate is the Z-Score Calculator?
It uses standard, widely-accepted formulas. Results are reliable estimates for general use and are not a substitute for professional advice.