SUM is the spreadsheet equivalent of an open invite: it welcomes everything into the total, whether it belongs there or not.

There used to be a gap between the possibilities offered by novel AI techniques, and their practical applications. That's no longer the case.

To fix an Excel spreadsheet not adding up correctly, check the SUM function's syntax and make sure there aren't any text format cells in the sheet.

Microsoft continues to expand the power and reach of its Copilot AI to provide greater assistance, especially to Windows users. A new skill now rolling out will let you use the Windows Copilot app to ...

Functions are the driving force of any Microsoft Excel spreadsheet, generating a single value or an array of results based on certain arguments you input. However, combining—or nesting ...

On Monday, the company announced that its Copilot AI is now available as an Excel function for Microsoft 365 insiders. That means you can add COPILOT to a formula and then use natural language in a ...

This month’s column shows how to use the remarkably versatile AGGREGATE function in Excel.

The Excel INDEX and MATCH functions are powerful lookup tools in Excel. Here's how you can use and combine them for optimal results.

Excel’s UNIQUE function allows users to extract unique values from a dataset, making it easier to identify and remove duplicates.

Build a custom Excel function library in minutes! Learn how to use VBA, create a personal macro workbook, and design a custom ribbon tab.

Custom functions enable you to add new functions to Excel by defining those functions in JavaScript as part of an add-in. Users within Excel can access custom functions just as they would any native ...