REDUCE Function in Excel: Boil an Array Down to One Result

⏱ 1 min readUpdated 28 September 2026

LogicalLevel: ExpertAvailable in: Excel 365 / 2021+

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

REDUCE is SCAN that returns only the final result — useful for repeated clean-up steps.

Syntax

=REDUCE(initial_value, array, LAMBDA(acc, value, calculation))
Argument What it means
array Values to process one by one.

Examples

Example 1

=REDUCE(A2, {"-","/"," "}, LAMBDA(t, c, SUBSTITUTE(t, c, "")))

Remove several characters from a code in one formula.

SCAN · LAMBDA · SUBSTITUTE

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