If you’re not sure of your WordPress site’s maximum upload file size, you can quickly check it by going to Media => Add New.

Check the maximum upload file size first if you don’t want to be disrupted during the blog installation process using the WP All in One Migration.

Here’s a step-by-step, illustrated guide on how to know your WP blog’s file upload limit:

1. Login to your WordPress Dashboard. New to WordPress? Here’s how to log in.
2. Hover your mouse over the “Media” menu then click the “Add New” link.
   
3. You will be redirected to the “Upload New Media” page.
4. Look at the “Maximum upload file size:”
   
5. As you can see from the screenshot above, the maximum upload file size is 128MB.

That’s it.