When you are importing the post contents from Blogger to WordPress, you will have a lot of formatting issues. The reason is that the XML file which you exported from Blogger is not completely compatible with WordPress blog. In order to solve this issue you use an online tool at http://blogger2wordpress.appspot.com/. Follow the below steps to solve the formatting issue when importing content from Blogger to WordPress:
Steps to convert Blogger XML to WordPress compatible XML:
1. Export the blog content from Blogger which generates a XML file.
2. Use this generated XML file at http://blogger2wordpress.appspot.com/ to get WordPress compatible XML file.
3. Then import the converted XML file in WordPress.
4. Its done !!!
This will solve most of the formatting issues compared to normal importing method where you will use the blogger exported XML directly in WordPress for importing.