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
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
→Ready to go deeper?