Z-Score Calculator

Find how many standard deviations a value differs from the mean. Fast, private, and built to make every number easier.

Input values

✦ Interactive

Observed valueMeanStandard deviation

How does this calculator work?

Find how many standard deviations a value differs from the mean. Edit the inputs and see the computed results. All calculations take place inside your browser, without submitting values to a server.

z=(x−μ)/σ

KEEP EXPLORING

More Statistics calculators

View category →