Free keyword density checker: check keyword density and word density in any content instantly. Spot keyword stuffing risks, see top n-gram phrases, and get SEO density ratings. No signup.
One pass surfaces your target-keyword density and the phrases Google actually reads from your content.
Check keyword density before publishing to stay in the 0.5%–2.5% optimal range without over-stuffing.
Audit blog posts and landing pages for keyword gaps and over-optimisation before client delivery.
Spot phrases you repeat too often: the top n-gram view reveals unintentional keyword clusters.
Learn what keyword density means in practice: paste any article and see exact density numbers instantly.
Keyword density is the percentage of times a target keyword appears in your content compared to the total word count. It tells you whether your content signals its main topic clearly, or repeats a keyword so often it looks unnatural to search engines. Check your content's keyword density free using the tool above.
Example: a 1,000-word article mentioning “content marketing” 15 times has a keyword density of 1.5%: within the optimal range for SEO.
Keyword density measures how often a target word or phrase appears per 100 words of content. Google does not publish an ideal figure, but most SEO practitioners consider 0.5%–2.5% optimal for a primary keyword. Below 0.5% may indicate the topic is insufficiently covered. Above 4–5% risks keyword stuffing: a pattern Google penalizes. This free keyword density checker surfaces both problems: paste any article, enter your target keyword, and see density % with a Too Low / Optimal / High / Stuffing rating in seconds.
The word density checker also surfaces your top repeated 2-word and 3-word phrases automatically, which reveals your document's de facto topic focus. Use it as a final check before publishing alongside the readability checker and rank risk scanner to audit content quality holistically.
Keyword stuffing is obvious at 5% density. The harder problem is the 0.3% case: a writer spends 2,000 words on a topic but mentions the keyword four times. The page covers the topic but barely signals it to Google. That's the gap this fills: the n-gram view shows what topic clusters Google actually reads.
In 2026, Google uses advanced systems: search intent analysis, semantic SEO, entity recognition, and NLP to evaluate content quality. Google does not rely on keyword density as a direct ranking factor: it focuses on the overall theme, context, and meaning of your content. Rankings are based on helpful content, topical authority, and user intent rather than exact keyword repetition. Use the E-E-A-T checker and rank risk scanner to audit those signals alongside keyword density.
Checking keyword density is two steps: measure the target keyword, then check what you're actually repeating. Enter your primary keyword above: the tool counts exact-match occurrences (case-insensitive) and calculates the percentage. Then look at the n-gram tables: the top 2-word and 3-word phrases reveal what Google will associate with your content. SEO keyword density for a primary term should sit between 0.5% and 2.5%. Use the grammar checker and clarity checker to make sure density improvements don't degrade readability.
Audit density, then balance quality and readability before you publish.
Free, instant, no signup. Paste your content, enter a keyword, and see density plus the phrases Google actually reads.