Keyword Density

Keyword density describes how often a target keyword appears on a web page, and it's calculated by dividing the page's total word count by the number of times the keyword appears. The concept matters to webmasters because Google expects organic traffic to come from genuine keyword and content relevance, not manipulation. So it isn't surprising that Google detects and penalizes pages where keywords are repeated to the point of stuffing, even when the intent was to help rankings.