blogger is gift from Google who can not buy custom domain and can not afford hosting price yearly blogspot is basically the sum of domain and hosting
Sub domain + Hosting= Blog Spot
but some custom domain have own importance many people have Convert Blogger Into Dot Com Domain and when viewer visit your site and you domain is on custom domain and you site give good impression to viewer .
so now you open Your Blogger dashboard and click on you blog
like this go to setting and click on "third party"
when you click Save button they will Give you 4 Codes Names and C names thses code you will paste on hosting like
For example if you are using go daddy site then you can use it i have color it
Now go to Go daddy site
Click On manage Button you domain setting will be open You will see like this
Click On "DNS ZONE FILE"
you will see like this
You will see "Cname"
now cope "www" and "ghs.google.com"
and these code also paste this and save it after 24 hours you will see your site transfer
i hope you will enjoy this tricks if you feel problem leave comments below related Convert Blogger Into Dot Com Domain i will reply instant and will solve your problem