Z Score Calculator

Calculate the z-score and percentile of a value in a normal distribution.

How to Use This Calculator

  1. Enter your Value (x).
  2. Enter your Mean (u03bc).
  3. Enter your Standard Deviation (u03c3).
  4. Click Calculate to see instant results with a step-by-step breakdown.
  5. Use the Share button to copy a link with your inputs pre-filled.

⚠️ Results are for informational purposes only. Always verify important calculations with a qualified professional.

Standard Deviation Calculator
Calculate population and sample standard deviation and variance.…
Variance Calculator
Calculate population and sample variance from a data set.…
Permutation Calculator
Calculate nPr — ordered arrangements of r items from n.…
Mean Calculator
Calculate the arithmetic mean (average) of a data set.…