NORM.S.DIST Function in Excel: Standard Normal Probability

⏱ 1 min readUpdated 28 September 2026

StatisticsLevel: ExpertAvailable in: Excel 2010+

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

NORM.S.DIST is NORM.DIST with mean 0 and standard deviation 1 — perfect for z-scores.

Syntax

=NORM.S.DIST(z, cumulative)
Argument What it means
z A z-score.

Examples

Example 1

=NORM.S.DIST(1.96, TRUE)

About 0.975 — 97.5% of values fall below z = 1.96.

NORM.S.INV · STANDARDIZE

📚 Part of the free Excel course: Beginner → Expert · Try it in the Formula Lab or ask the AI Helper.

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