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REDUCE Function in Excel: Syntax, Examples and Free Practice

By Rinkesh Shah, founder of Cellgrids.

REDUCE is an Excel Logic function. Reduces an array to a single accumulated value using a LAMBDA.

REDUCE syntax

=REDUCE([initial_value], array, lambda)

Arguments

When to use REDUCE

REDUCE is used to build decision rules directly into a spreadsheet instead of manually judging each row.

Practice REDUCE online, free

Open the live Excel-style spreadsheet and try REDUCE yourself. No Excel install or sign-up needed to start.

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Frequently asked questions

What does the REDUCE function do in Excel?

Reduces an array to a single accumulated value using a LAMBDA.

What is the syntax of REDUCE in Excel?

The syntax is =REDUCE([initial_value], array, lambda). initial_value: The starting value before the calculation begins (optional); array: The range or array to evaluate; lambda: The expected rate of occurrence.

Where can I practice REDUCE online for free?

Open the free live spreadsheet on Cellgrids and try REDUCE yourself. No Excel install is needed and you can start without signing up.

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