Keyword Density Checker

Healthy density ranges:

• ·Primary keyword: 0.5%–2.5% of total word count
• ·Secondary keywords: 0.3%–1.5% each
• ·LSI/semantic terms: appear naturally without targeting a specific percentage

What to look for in results:

Stop words (the, is, of, and) are automatically filtered. Focus on the substantive terms in the top results. If your primary keyword appears at 4%+ density, the text likely reads awkwardly — revise to use synonyms and related phrases.

Bigrams and trigrams:

Two-word and three-word phrases often reveal your true topical focus better than single keywords. A page ranking for "keyword density checker" should show that phrase in the top bigrams with a density above 0.5%.

Exclude branded terms:

Your brand name will often appear at high frequency on homepages and about pages. This is expected and fine — focus keyword analysis on non-branded terms.

Keyword density checker vs keyword research tools:

Keyword density tools analyze text you have already written. Keyword research tools (Google Keyword Planner, Ahrefs, Semrush) identify what terms to target before you write. Use keyword research to select your target terms, then use this checker to verify they appear at appropriate frequency in your finished content.

Keyword density vs TF-IDF:

TF-IDF (Term Frequency–Inverse Document Frequency) is a more sophisticated measure that weights keyword frequency against how often the term appears across the entire web. Keyword density is a simpler metric that is still useful for avoiding extremes. Professional SEO tools use TF-IDF for competitive analysis; keyword density is sufficient for content quality checks.

Keyword density is the percentage of times a keyword appears in your content relative to the total word count. While there is no magic percentage that guarantees rankings, extremes on either end hurt your SEO: too low and search engines may not associate your page with the keyword; too high and your content risks being flagged as keyword-stuffed, which triggers quality penalties.

This checker analyzes your text and shows the frequency and density percentage for every single keyword, two-word phrase (bigram), and three-word phrase (trigram) in your content. The output lets you see at a glance which terms dominate your text and whether any important keywords are underrepresented.

The most actionable use is not hitting a specific density number — it is confirming that your primary keyword and its semantic variants appear naturally, while ensuring no single term is repeated so frequently that the text reads mechanically. Good keyword density is a byproduct of writing naturally about your topic with the right vocabulary.