Microsoft Excel remains the most popular spreadsheet application in the world. Excel spreadsheet data is often sensitive and contains personal or financial information. It is understandable that you would consider adding extra protection to your Excel files, such as a password.

You can password protect any Excel file using various options including the built-in Excel password tool or third-party Excel password options.

The first option for Excel password protection is an integrated tool. The entire Microsoft Office suite has a password protection tool that you can use to protect your Excel spreadsheets, Word documents, PowerPoint presentations, and so on.

Now enter a secure password for your Excel spreadsheet. Make sure your password is strong and unique, press OK and re-enter your password to confirm.