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

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

Keep reading

Excel Functions A–ZWRAPCOLS Function in Excel: Fold a List Into ColumnsExcel Functions A–ZYEARFRAC Function in Excel: Fraction of a Year Between DatesExcel Functions A–ZAVERAGE Function in Excel: Arithmetic Mean of Numbers
✨ Ask AI about this article

Stuck on a step? Ask a question and the AI answers using this article.

Free · AI can be wrong