Protecting a worksheet in Excel 2003 prevents others users from editing it. For example, if you have tracked and charted your business's sales on a sheet, you will want co-workers to access the ...

You can use Excel to control access to the PDF and prevent unwanted changes to your worksheet. You can also lock specified cells to protect the worksheet.

Safeguard your Excel worksheets from accidentally deleting formulas or data sets by locking important cells, while leaving the rest of the worksheet editable.

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.

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.

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.

The final step is to protect your Excel Worksheet to finish hiding the formulas. Click Format in the Cells section of the Home tab again. Now, select Protect Sheet from the drop-down menu.