Z-Score Calculator

Calculate z-scores to standardize values and understand how data points relate to the mean. Get instant results with percentile rankings and detailed interpretations.

Calculate Z-Score from Raw Value

Enter a raw score along with population mean and standard deviation to calculate its z-score.

Calculate Z-Scores for Multiple Values

Enter multiple raw scores to calculate z-scores for each value.

Find Raw Score from Z-Score

Enter a z-score to calculate the corresponding raw score.

Results

📊

Enter Values to Calculate

Fill in the required fields on the left and click "Calculate Z-Score" to see your results here. The calculator will show:

  • Z-Score value
  • Percentile ranking
  • Statistical interpretation
  • Formula breakdown

Choose a calculation mode above to get started.