ISERROR Function in Excel: Does the Formula Return Any Error?

⏱ 1 min readUpdated 28 September 2026

InformationLevel: IntermediateAvailable in: Excel 2007+

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

ISERROR returns TRUE for any error value. It is mostly used in conditional formatting and checks; for replacing errors, IFERROR is simpler.

Syntax

=ISERROR(value)
Argument What it means
value A formula or cell.

Examples

Example 1

=SUMPRODUCT(--ISERROR(F2:F500))

Count error cells in a column — a good pre-send check.

IFERROR · ISNA · AGGREGATE

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