Microsoft Word quickly converts columns to a table when you apply the "Insert" ribbon command and then select the "Convert Text to Table" option.

Click "Convert Text To Table" to turn paragraphs into tabular form (we'll come back to this shortly). Choose "Excel Spreadsheet" to insert an Excel spreadsheet (and all its tools) within your Word ...

Select the text and click Insert > Table > Convert Text to Table. Choose the number of columns for your table, and let Word automatically select the number of rows.

Changing numerous tables in a Word document one by one would be a tedious project. Instead, use VBA!