Export your blog

When you back up your blog, you get an .xml file of the posts and comments:

1. Sign in to Blogger.
2. Select the blog to back up.
3. In the left menu, click Settings.
4. In the "Manage blog" section, click Back up Content > Download.
5. This should bring you to Takeout page with Blogger selected. Download the archive.
6. Extract the feed.atom from directory Takeout > Blogger > Blogs > YOUR BLOG DIRECTORY

Blogger Export/Backup Help