How to Disable Date Auto Fill in Excel. Microsoft Excel's Auto Fill features help you quickly enter the same value in more than one cell or fill a series of cells with related or sequential values.

If you're annoyed with Excel constantly changing your numbers to percentages or dates or applying unwanted formatting, here are a couple of ways to disable the auto-formatting feature.

If numbers keep changing to dates automatically in Excel or if Excel changes dates to random numbers then this post will help you fix the issue.