Sometimes, to improve the look of a table on a page, you might format a table to resemble a simple spreadsheet. In this version of OneNote, you also have the option to convert it to a fully functioning Microsoft Excel spreadsheet.
Open the page that contains the table you want to convert.
Activate the table by clicking inside any of its cells and reveal the hidden Table Tools tab.
In the Table Tools tab, click the Convert to Excel Spreadsheet button.
OneNote converts the table to an Excel spreadsheet and inserts a file icon on the page and an embedded dynamic preview of the file. When you change or update the spreadsheet, the preview on the notes page automatically updates.
If your data is already in a spreadsheet, you can add an Excel spreadsheet to your page.