Identifying keyword density of your content

How can we able to identify keyword density in our content? Is it easy to know about it? We'll, mostly our clients in DigitalPoint, V7N, WickedFire, NamePros, NetBuilders and other webmaster forums are looking for customers or applicants either short-term or long-term to write articles with keyword density. But what is keyword density anyway?

Keyword density is the number of keywords required depending on the number of words in your article or content. For example, the keyword is health and the number of words are 300, with 1.5% at set. All you have to do is to multiply 300 x 1.5% = 4.5 or 4. Which means that you must only have four keywords of "health" within the content.

Now you know how keyword density is identified in the content.