Z-Score Calculator - Free, Instant, In Your Browser
Enter a value, the mean, and the standard deviation to calculate how many standard deviations the value is from the mean.
How to use Z Score Calculator
- 1Enter the required date(s) and details above.
- 2Click Calculate - Z Score Calculator runs instantly, right in your browser.
- 3Read your result below.
Your file is processed in your browser and is never uploaded.
Frequently Asked Questions
What's the formula?
Z = (value − mean) ÷ standard deviation.
Is my data sent to a server?
No - everything runs entirely in your browser with JavaScript. Nothing is uploaded.