Why this matters
Keyword density was once the central metric of on-page SEO — the ratio of a target keyword's appearances to the total word count. While modern search engines rely on far more sophisticated signals, density still matters as a guardrail. Too low and the page may not clearly signal its topic; too high and it risks a keyword-stuffing penalty. The practical value is not in hitting an exact percentage but in understanding which words and phrases your content actually emphasizes versus what you intended.
This analyzer strips away the noise that makes manual counting impractical. A built-in stop-word list of roughly 175 common English function words filters out 'the', 'and', 'of', and similar terms that would otherwise dominate the results. A minimum word-length setting lets you exclude one- and two-letter fragments. The result is a clean table of the twenty most prominent content words, each with an exact count and density percentage, exportable with one click to a tab-separated format for spreadsheets.
Output table structure
| Column | Description |
|---|---|
| Rank | Position by frequency (1 = most common) |
| Keyword | The word as it appears (case-insensitive) |
| Count | Number of occurrences in the text |
| Density % | (count / total words) x 100 |
| Stop words | ~175 common English function words excluded by default |
| Min length | Configurable filter to ignore short fragments |
How to use it
Paste your article, blog post, product description, or essay into the text area.
Toggle 'Exclude stop words' on to hide common function words, or off to see the full frequency list including them.
Set a minimum word length (for example, 3) to filter out short fragments that add noise.
Review the ranked table showing each keyword's count and density percentage.
Click 'Copy table' to grab a tab-separated snapshot you can paste directly into Google Sheets or Excel.
Testing your result
Pick your primary target keyword and check that it appears in the top five results with a density between one and three percent — the general range most SEO practitioners consider natural. If your target keyword is absent from the top twenty, your content may not be focused enough on that topic. As a cross-check, use your browser's find function to manually count the keyword and compare it to the tool's count. The numbers should match exactly, confirming the tokenizer handles your text correctly.
Common mistakes
Leaving stop words included when analyzing long texts, which buries your actual content keywords under a flood of 'the', 'is', and 'and'.
Fixating on an exact density target (the old 'two to three percent rule') instead of using density as a relative signal to compare your content's emphasis against your intent.
Forgetting that the tool counts individual words, not phrases — if your target is 'best running shoes', you need to check those words separately.
Ignoring the minimum word-length setting, which can let single-letter results like 'a' or 'I' clutter the table when stop words are toggled off.
Edge cases and options
The tokenizer splits on whitespace and non-letter, non-digit characters, preserving apostrophes inside words so contractions like 'don't' count as one token rather than two. This means possessives and contractions are handled naturally. The tool shows at most twenty rows, so very short texts or heavily filtered texts may produce fewer entries. The tab-separated copy format is deliberately simple — it pastes cleanly into any spreadsheet without requiring CSV import dialogs.
Real-world use cases
Content writers checking that their primary keyword appears frequently enough without crossing into stuffing territory.
SEO auditors comparing keyword density across competing pages to understand why one ranks higher than another.
Editors reviewing guest posts to ensure the author has naturally integrated the agreed-upon target keywords.
Academic writers checking for unintentional repetition of certain terms in a research paper.
Frequently asked questions
Q: What is keyword density?
A: It is the percentage of times a keyword appears relative to the total word count. SEO tools traditionally use it to spot over-optimization.
Q: Which stop words are excluded?
A: About 175 common English function words including 'the', 'of', 'a', 'to', 'is', 'in', 'that', 'it', 'with', 'as', 'for', and 'was'. Turn the toggle off to include them.
Q: How is the word count calculated?
A: The tool splits on whitespace and non-letter, non-digit characters. Apostrophes inside a word (like 'don't') are preserved, so contractions count as one word.
Q: Why do I see fewer than 20 rows?
A: The tool shows at most 20 keywords. If your text has fewer unique words after filtering, fewer rows appear.
Q: Can I analyze multi-word phrases?
A: This version counts individual words only. For phrase-level density, you would need a separate n-gram analysis tool.
Q: Does the tool support languages other than English?
A: The stop-word list is English-specific. For other languages, toggle stop words off and rely on the minimum word-length filter to reduce noise.
Start using it now
Try the Keyword Density tool. See also Word Counter, Text Statistics, and Find & Replace.
