ISODD Function in Excel: Is the Number Odd?

⏱ 1 min readUpdated 28 September 2026

InformationLevel: BeginnerAvailable in: Excel 2007+

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

ISODD returns TRUE for odd numbers (decimals are truncated first).

Syntax

=ISODD(number)
Argument What it means
number A number.

Examples

Example 1

=ISODD(ROW())

Conditional-format rule for zebra rows.

ISEVEN · MOD

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