Is Keyword Density Still Relevant?
In the early 2000s, keyword density was the dominant on-page SEO technique. Google’s Panda algorithm (2011) made aggressive stuffing a penalty trigger rather than a ranking boost. Today, keyword density matters primarily as a floor check — are you mentioning the topic enough to signal relevance? Scan your content density instantly with our Keyword Density Scanner.
The Healthy Range: A Practical Guideline
For a naturally written English article, a target keyword appearing at 0.5–2% density is almost always within the range Google considers normal and non-manipulative. Below 0.5% on a long article may indicate insufficient topical focus. Above 3% on a short article will begin to read unnaturally, which is both a reader experience problem and a potential over-optimisation signal.
Semantic Proximity: The More Important Modern Metric
Google’s language models evaluate whether a page covers a topic comprehensively by checking for semantically related terms — entities, synonyms, and conceptually adjacent vocabulary that a genuinely expert article would naturally include. An article about “mortgage rates” that never mentions “amortisation”, “APR”, or “refinancing” will be evaluated as thin coverage regardless of how many times it says “mortgage rates.”
Practical Application
Write first for comprehensive coverage, then check density as a sanity metric. If your density is below 0.5%, intentionally work your primary term into a few more natural positions — headings, the opening paragraph, the conclusion. If it is above 3%, replace some instances with pronouns, synonyms, or implied references that read more naturally. Never add or remove keyword mentions in ways that make the text less natural — the reader experience signal outweighs any density benefit.