Locking cells in a Microsoft Excel spreadsheet is among the most commonly used functions. Here’s a guide on how to lock cells in Excel.

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.

Here is a tutorial to lock or hide only the formula cells in an Excel workbook. You can also lock formulas in all worksheets in a workbook.

You can stop or prevent users from editing directly in cells in Excel. You have to lock and protect Cells in Excel by following these steps.

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

You worked hard to put that Excel sheet together, now protect it from unintended damage.

Disappointed that you can't protect cells in Numbers as you can in Excel? Here are a couple of workarounds.