What is keyword density and what is the formula for knowing keyword density?

Keyword density is the percentage of times a keyword or phrase appears on a web page compared to the total number of words on the page. In the context of search engine optimization keyword density can be used as a factor in determining whether a web page is relevant to a specified keyword or keyword phrase.
 
When calculating the density of a keyword phrase, the formula would be (Nkr * Nwp / Tkn) * 100, where Nwp is the number of words in the phrase. So, for example, for a page about search engine optimization where that phrase is used four times and there are four hundred words on the page, the keyword phrase density is (4*3/400)*100 or 3 percent.
 
Keyword density is the percentage or in ratio that helps to determine how many times a keyword has been used in an article or blog. It should be minimum and should not exceed the limit to maintain the essence of the content. It will help to rank the content quickly.
 
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