Free tool · Content SEO
Keyword Density Analyzer.
Paste your content and optionally enter a target keyword. See word count, phrase density, and whether you are under- or over-using your target keyword.
- Single-word, two-word, and three-word phrase density (stop words filtered)
- Target keyword check against the 1–3% optimal density range
- Content stats including word count, sentence count, and avg. words per sentence
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01How it works
Step 01
Paste your content
Copy the text content of any page, blog post, or article and paste it into the analyzer. Enter a target keyword (optional).
Step 02
Run the analysis
Calculates word/sentence count and extracts the most frequent single words, 2-word, and 3-word phrases.
Step 03
Review keyword density
See density percentages for every significant phrase. Target keyword is flagged if outside the 1–3% optimal range.
Step 04
Optimize your content
Adjust keyword usage based on results. Reduce over-used terms, add under-used targets, re-analyze to verify.
02Questions
Frequently asked.
What is keyword density and how is it calculated?
+Keyword density is the percentage of times a keyword or phrase appears in a piece of content relative to the total word count. Count of keyword occurrences divided by total words, times 100. A keyword appearing 5 times in a 500-word article is 1% density.
What is the ideal keyword density for SEO?
+There is no single perfect density. General consensus is 1% to 3% for most content. Below 0.5%, search engines may not associate your page with that keyword. Above 3-4%, you risk triggering keyword stuffing penalties. Focus on writing naturally with keywords in important positions.
Is keyword density still relevant in 2026?
+Yes, as a useful diagnostic metric. Modern search engines use semantic understanding and NLP to evaluate content relevance, so they do not rely solely on exact-match counts. But density analysis helps identify potential issues like keyword stuffing or insufficient usage.
What are stop words and why are they filtered?
+Stop words are common words like "the," "and," "is," "in," "to" that appear frequently but carry little topical meaning. We filter them from the single-word frequency list. For multi-word phrases, phrases where all words are stop words are filtered; mixed phrases are kept since they often form relevant keyword phrases.
What is keyword stuffing and how do I avoid it?
+Keyword stuffing is unnaturally repeating a keyword to manipulate rankings. Google penalizes it. To avoid it: write naturally, use synonyms and related terms, keep density below 3%, and read your content aloud. If the keyword usage sounds forced, it probably is.
Should I optimize for single keywords or phrases?
+Both, but multi-word phrases (long-tail keywords) often provide more value. Single keywords are competitive and ambiguous. Two and three-word phrases have clearer intent and are easier to rank for.
03Related tools
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