STANDARDIZE Function in Excel: Z-Score in One Step

⏱ 1 min readUpdated 28 September 2026

StatisticsLevel: ExpertAvailable in: Excel 2007+

In this article
  1. Syntax
  2. Examples
  3. Example 1
  4. Related functions

STANDARDIZE converts a value to a z-score: how many standard deviations it sits from the mean. Z-scores let you compare marks from an easy exam and a hard one.

Syntax

=STANDARDIZE(x, mean, standard_dev)
Argument What it means
x The value.

Examples

Example 1

=STANDARDIZE(C2, AVERAGE($C$2:$C$80), STDEV.S($C$2:$C$80))

Z-score for each student; above 2 is exceptional.

NORM.DIST · AVERAGE · STDEV.S

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