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Keyword Density Checker
Check how often a keyword appears in your text and its density percentage — with whole-word, substring and case options. Runs locally in your browser; your text is never uploaded.
Runs entirely in your browser — nothing you type is uploaded.
Note: the analysis runs in your browser with JavaScript. With JavaScript off you can read this guide, but the tool controls will not appear.
Check your keyword density
This tool analyses your text entirely in your browser — no upload and no network request — and reports the total word count, how many times your keyword appears, and the keyword density percentage. It supports whole-word or substring matching and case sensitivity, and handles multi-word keyword phrases.
How it works
- Paste your content into the text box.
- Enter your target keyword or phrase.
- Choose options — case insensitive and whole-word matching are on by default.
- Click Check density to see word count, occurrences and density, then copy the results.
Benefits and features
- Accurate counting — whole-word matching avoids counting "cat" inside "category".
- Phrase support — multi-word keywords are counted as phrases.
- Flexible matching — switch between whole-word and substring, case-sensitive or not.
- Copy a summary — export a clean text report of the results.
- Private and offline — your text never leaves your device.
Practical tips
Use density to spot over-repetition rather than to hit a magic number. If a keyword appears unnaturally often, rewrite for readers first — use synonyms and related terms, and make sure every mention reads naturally. Check your main keyword and a couple of variations to get a fuller picture of how your content reads.
Limitations
Keyword density is only one small SEO signal and there is no specific percentage that Google requires; this tool does not claim otherwise. It counts literal matches of the keyword you enter and does not understand synonyms, stemming or meaning. Word counting is based on whitespace, so unusual formatting can affect the totals slightly.
Privacy
Everything runs locally in your browser. Your text is never uploaded, stored or shared, and the tool makes no network requests.
Frequently Asked Questions
How is keyword density calculated?
Density is the number of keyword occurrences divided by the total number of words, shown as a percentage and rounded to two decimals. For a multi-word keyword, each phrase occurrence counts once and is divided by the total word count.
What is the difference between whole-word and substring matching?
Whole-word matching only counts the keyword when it stands as its own word or phrase (so "cat" is not counted inside "category"). Substring matching counts every occurrence of the letters, including inside other words. Whole-word is on by default.
Does case matter?
By default the check is case-insensitive, so "SEO", "Seo" and "seo" all count. Turn off "Case insensitive" to count only exact-case matches.
Is there an ideal keyword density?
No. There is no specific density that Google requires, and stuffing a keyword can hurt readability and rankings. Keyword density is only one small signal — focus on natural, useful content and use this tool to avoid over-repetition.
Is my text uploaded anywhere?
No. All analysis happens locally in your browser. Your text is never uploaded, stored or shared, and the tool makes no network requests.
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