How to insert & use Functions in Excel Functions help you perform a variety of mathematical operations, lookup values, calculate date and time, and a lot more.

Save this for the spreadsheet jocks in your office—we'd bet even the experts don't know all of these formula tips.

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 ...