The KGR Formula is easy to use. Its just the number of allintitle: search results divided by the keyword's monthly search volume.
# of allintitle: Results ÷ Monthly Search Volume = KGR
Allintitle: is an advanced search operator for Google that will limit the search results to webpages that have your search term inside of their title. This is considered broad match where all of the phrase needs to be in the title of the web page, however it doesn't need to be found in the same exact order.
The average number of times a keyword phrase is search on a search engine such as Google.
A search term or keyword phrase is the exact phrase a user enters to perform a search on a search engine such as Google.