OneNote Gem Add-Ins

OneNote users have been very vocal about OneNote's Merge Cells feature. It is the most voted Microsoft OneNote feedback request.
 
On July 29, 2025, OneNote v2508 (Build 19123.20000) finally added the ability to merge cells in table!
 

How to use:

 

1. First, select two or more adjacent cells in the OneNote table.
2. Right-click, click “Table” Menu -> Click “Merge Cells” menu item. Or on the ribbon "Table" tab -> "Merge Cells” feature.

 
OneNote will merge cells horizontally or vertically.
 

Availability

On July 29, 2025, the Merge Cells feature will be available in the following OneNote.

Platform	Minimum version number	Display the merged cells	Create a merge cell
Windows	16.0.19030.10000 or later	✅ Yes	✅ Yes
Mac	16.100.715.0 or later	✅ Yes	✅ Yes
iPad	16.100.715.0 or later	✅ Yes	✅ Yes
iPhone	16.100.715.0 or later	✅ Yes	❌ Not yet
Android	16.0.19030.10000 or later	✅ Yes	❌ Not yet
Web	—	✅ Yes	❌ Not yet