Keyword Density Checker
Analyze word frequency in your content and check focus keyword usage.
This tool runs entirely in your browser. Your files are never uploaded to a server.
0
Total words
What this tool does
Counts the words in pasted text, ranks the 15 most frequent non-stop words, and calculates each word's share of the total word count. You can also enter one focus keyword to see its exact count and density.
How to use it
Paste an article or page copy into the large field, then optionally enter a single focus keyword. Results update immediately as you type; use Reset to clear both fields and begin another check.
Worked example
For the text "SEO tools improve SEO results", the tool counts five total words. The focus keyword "seo" appears twice, so its displayed density is 40.0%, while the frequency table ranks SEO first.
How density is calculated
Density equals the number of exact appearances divided by all recognized words, multiplied by 100. Stop words are omitted from the top-15 table but still remain in the total-word denominator used for every percentage.
Tokenization and stop words
Text is lowercased and matched with the pattern used by the component: Latin letters a-z, digits, apostrophes, and hyphens. A small English list such as "the", "and", and "for" is filtered only from the ranking table.
Limitations
The focus field matches one complete token, not phrases or word variants. Accented and non-Latin characters are not fully recognized, and the English-only stop-word list makes this checker unsuitable for precise multilingual linguistic analysis.
Scope, guidance and privacy
Keyword density is a descriptive editing signal, not a ranking target or guarantee. Review relevance and readability instead of forcing a percentage. All counting runs locally in your browser, and pasted content is not uploaded.
Frequently Asked Questions
- What's a healthy keyword density?
- There's no strict rule, but most SEOs aim for roughly 0.5–2% for the focus keyword to avoid keyword stuffing.
- Does this count common words like 'the' or 'and'?
- No, common stop words are filtered out of the frequency table so the results focus on meaningful terms.
- Is high density always better for ranking?
- No — modern search engines favor natural, readable content over exact keyword repetition.