How to Draw a Diagonal Line Through a Cell in Excel

Admittedly, there aren’t many cases where you’ll need to, but if you should ever need to draw a line, diagonally, through a spreadsheet, it’s actually quite easy. I found myself with this problem recently -- needing to draw a diagonal line in a workbook -- and was quite perplexed on how to do it. After some Googling, I found the answer, and today I’ll share it with you.

In my example, I needed to add a dividing line in the top left cell separated Name and Sales in a way that made it clear Names went in Column A and Ages were part of Row 1. We’ll repeat that for this example.

1. Open a Blank workbook in Excel.

2. You can do this in any size of cell, but it’s easier to understand if you make it larger first. To do that, we’ll just click and hold the line between Row 1 and 2, and then drag until it’s at the desired height. Then do the same for the column to expand it horizontally.

3. Right click the cell and select Format Cells.

4. At the top, click the Border tab.

5. And then choose the diagonal line option at the bottom right of the menu. You can choose to draw your line in the opposite orientation by clicking the other diagonal line icon on the lower left of the menu.