I just performed a preliminary Google for "crack excel password" and a bunch of sites came up. I've used Squrf's method to get around Word passwords before, but I've never tried a spreadsheet.

Whether you’ve forgotten the password or received a protected file from someone else, unlocking an Excel spreadsheet without the password may seem like an insurmountable challenge.

Learn how to unprotect Excel sheets or workbooks without a password using this simple step-by-step guide. No software required!

Hackers can crack weak passwords in seconds, while strong ones may take years. Learn about the time to crack your password and boost security.

If you have sensitive data you'd like to keep from prying eyes in a Microsoft Excel file, the easiest way to protect it is with Excel's built-in password tools.

There are several options available to you to protect your Excel file with a password. Remember that once you protect the Excel file, you cannot open it without entering the password.

At the file level, you can password protect an Excel workbook in two ways: You can determine who can get in and who can save changes.

If you want to remove the password from Excel, here is how you can do that. Whether you want to remove a password or unprotect a sheet, workbook, or spreadsheet, this step-by-step guide can help ...

You can add or remove a password from your Excel spreadsheets through the File tab. You'll do it slightly differently on a Mac and PC.