PI Function in Excel: The Value of π

⏱ 1 min readUpdated 28 September 2026

MathLevel: BeginnerAvailable in: Excel 2007+

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

PI returns 3.14159265358979, accurate to 15 digits. It takes no arguments but still needs the brackets.

Syntax

=PI()

Examples

Example 1

=PI()*(B2/2)^2

Area of a round table from its diameter.

POWER · RADIANS

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