What Is Keyword Density and How Is It Calculated?
Keyword density is simply the percentage of times your target keyword appears in a piece of content compared to the total number of words on the page. The formula is straightforward: divide the number of times the keyword appears by the total word count, then multiply by 100.
For example, if your article is 1,000 words long and your keyword appears 15 times, your keyword density is 1.5%. Our Free keyword density calculator does this automatically — you just paste your content or enter a URL.
Why Does Keyword Density Matter for Google?
Google uses keyword frequency as one of many signals to understand what a page is about. A page that never mentions its target topic is unlikely to rank for it. However, a page that mentions the same phrase dozens of times in an unnatural way triggers Google's keyword stuffing filters, which can result in a manual or algorithmic ranking penalty.
The safe zone is 0.5% to 2.5% density for most content. Within this range, you signal relevance to Google without raising red flags. Use our free keyword density tool to check exactly where your content sits on the spectrum.