Keyword Density

Keyword density is the density of a particular keyword, or set of keywords, located on an individual webpage. It is a measure of how many times a keyword is repeated and compared to the overall content of a web page. If a keyword was listed 5 times out of a word count of 50 the keyword density would be 10%.If repeated too often though, it could lead to the page being penalized for spamming.

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Keyword density refers to the ratio (percentage) of keywords contained within the total number of indexable words within a web page.

The preferred keyword density ratio varies from search engine to search engine. In general, I recommend using a keyword density ratio in the range of 2-8%.

Some of the Keyword Density Checker tools are as follows.

http://www.keyworddensity.com/

http://www.seochat.com/seo-tools/keyword-density/

http://tools.seobook.com/general/keyword-density/

http://www.iwebtool.com/keyword_density

http://www.webconfs.com/keyword-density-checker.php