If you are a WordPress developer you can easily add tables to your pages or posts with the plugin called TablePress.
Test Table from TablePress Plugin
| Column A | Column B | Column C |
|---|---|---|
| Bob | Smith | 42 |
| Sally | Johnson | 29 |
You install the plugin and develop your tables in the dashboard. Once ready, you simply have to copy and paste the shortcode into your post to display the table.