Blogger

• Blogger is a blog and website hosting platform owned by Google. Blogger is also known by the historical Web address blogspot.com. Blogger offers free entry-level Web hosting with an opportunity to collect revenue through AdSense ads served alongside your original content. Many sites start on Blogger and later migrate to more advanced platforms such as WordPress.
  
  

WordPress

• WordPress encompasses both a hosting platform via WordPress.com and source code for hosting your own site though WordPress.org. The underlying technology for both is similar, although the available tools and extensions differ. The process to migrate from Blogger to WordPress.com and WordPress.org is similar. You're a good candidate to migrate if you can determine there are functions you'd like to see on your blog that are offered through WordPress and not Blogger.
  
  

WordPress Import

• WordPress built import tools into the platform with the release of version 2.0. These built-in scripts typically offer the simplest migration path for most blogs. Open your WordPress admin interface and click "Tools" then "Import" from the left column. Choose to import from blogger and select the exported pages of your Blogger site. Note the exact text of any errors you encounter. A common error requires that you increase to the memory available to PHP through your php.ini file. You may need to consult with your hosting provider to do this. There are a wide variety of less common errors that you may encounter.
  
  

Google Blog Converters

• The Google Blog Converters tools have been designed to convert Blogger exported files into the WordPress format. If you run into an error importing your Blogger files into WordPress using the built-in scripts, these scripts offer a viable alternative. The Google Blog Converters tools are written in the scripting language Python. You may need to install Python or additional tools and system extensions before you can run these. Consult the Readme for precise system requirements. Once the tools are installed, execute the script blogger2wordpress.sh from the command line to convert a Blogger export file to WordPress.