What it does
Converts the active cell’s formula to a reusable LAMBDA custom function and optionally replaces the existing function with the new LAMBDA custom function.

When to use it
When you want to make a custom LAMBDA function out of an existing function to be able to reuse the function or manage it from one central place.

Why to use it
It’s a very quick way to create a LAMBDA custom function out of an existing formula and enables you to reuse the function and manage it from one central place.

Default shortcut
None

Other Details

• Category: Formulas / General
• Difficulty: 2/5
• Usage/frequency: 3/5
• Automation factor: 4/5 (estimated 180 seconds saved each time used)
• Type: Shortcut
• Date added: 2/21/2026
• Tags: LAMBDA, formula

Related Macros
Mapify Formula
Letify Formula

Other Articles
None

Prerequisites
Select a cell that contains the formula for which you want to build a custom Lambda function.

Instructions
Run the Lambdafy Formula macro.  The formula is evaluated for cell references and calculations.  If any are found, a custom LAMBDA function is built and added to the active workbook.  You can optionally elect to have the active cell formula replaced with the new LAMBDA custom function.  If so, the previous formula is added to a cell note in case you need to revert it.

TBD…