Keyword Density Checker
What Is Keyword Density?
Keyword density is the percentage of times a specific keyword or phrase appears on a page relative to the total word count. It is one of the oldest on-page SEO metrics — historically used by search engines to decide what a page is about and how relevant it is to a given query.
Modern search engines have moved well beyond raw keyword counting. Google now relies on semantic understanding, entity recognition, and user-behavior signals. However, keyword density still matters as a sanity check: pages that severely under-use their target topic look thin, while pages that over-use it look spammy. The goal is natural, balanced usage that signals topical focus without crossing into keyword stuffing.
How to Use This Tool
- Enter a URL or paste your text content into the field above.
- Click Check to analyze the content.
- Review the keyword frequency table, density percentages, and most prominent terms.
- Compare your top keywords against the topic you actually want to rank for — alignment is the goal.
Use the results alongside our Meta Tags Analyzer to ensure your target keywords also appear in title tags and meta descriptions, and our Keywords Suggestion Tool to discover related terms worth covering.
How Our Keyword Density Checker Works
The analysis happens in real time, in the browser session that launched it. The process:
- Content extraction — when you supply a URL, we fetch the page and strip away navigation, headers, footers, scripts, and other boilerplate, leaving only the visible body text. When you paste text directly, all of it is analyzed verbatim.
- Tokenization — text is split into words, lowercased, and stripped of punctuation. Common stop words (the, a, of, and similar) are filtered so they don't dominate the report.
- Frequency & density calculation — for each remaining word, we count occurrences and divide by the total word count to get the density percentage. Two-word and three-word phrases are also extracted and reported separately.
- Prominence weighting — terms appearing in the title, headings, and first paragraph of the page are highlighted as prominent, since search engines weigh these positions more heavily.
The tool does not store the URLs or text you analyze. Each analysis is independent.
Understanding the Metrics
Frequency
The raw number of times a keyword appears in the analyzed content. Useful as an absolute measure — a keyword appearing once on a 2,000-word page is qualitatively different from one appearing 30 times.
Density (%)
Frequency divided by total word count, expressed as a percentage. A keyword with 20 occurrences in a 1,000-word page has a 2% density. This is the classic SEO metric.
Single Words vs. Phrases
The tool reports single keywords (1-grams), two-word phrases (bigrams), and three-word phrases (trigrams) separately. Phrases are often more actionable for SEO than isolated single words because they more closely match real search queries.
Prominent Terms
Keywords that appear in the title, H1/H2 headings, or the opening paragraph. Search engines weight these positions higher when determining what a page is about, so prominent terms tell you what signal a page is sending — regardless of overall density.
SEO Best Practices for Keyword Density
There is no universal target percentage. Instead, aim for the following:
- Use your primary keyword naturally, typically once in the title, once in an H1, and a handful of times throughout the body.
- Vary terminology — Google understands synonyms and related entities, so writing naturally with related terms strengthens topical signals more than repeating one exact phrase.
- Watch for accidental keyword stuffing — automated content, AI-generated text, or aggressive optimization can spike density above 5% for a single phrase, which looks unnatural.
- Match the language of your audience — if real users phrase the query differently from the textbook keyword, write for the user, not the keyword tool.
Frequently Asked Questions
What is the ideal keyword density for SEO?
There is no perfect number, and Google has explicitly said it doesn't use density as a direct ranking factor. As a rough sanity check, 1–3% for a primary keyword is reasonable on a well-written page. Focus on natural language and topical coverage rather than hitting a specific percentage.
Can high keyword density hurt my rankings?
Yes. Keyword stuffing — repeating the same term unnaturally to game search engines — violates Google's spam policies and can trigger ranking penalties or manual actions. If your density for a single phrase climbs above 5% with no natural reason, rewrite the content.
Does the tool count phrases as well as single words?
Yes. The report includes single keywords (1-grams), two-word phrases (bigrams), and three-word phrases (trigrams). Phrases often map better to real search queries than isolated words.
Should I analyze my page or my competitor's page?
Both. Analyze a competitor's page that ranks well for a query you target — you'll see which terms they emphasize. Then analyze your own page to compare and identify topical gaps you may want to cover.
Are stop words counted?
Common stop words (such as the, a, and, of, to, is) are filtered out so they don't dominate the report. This makes the results focus on meaningful terms.
Is this tool free to use?
Yes. The Keyword Density Checker is fully free, with no signup, no credit card, and no usage limits for normal browsing. The service is supported by ads on the page.
About This Tool
The Keyword Density Checker is built and maintained by the FreeGetStats team, an independent group of SEO practitioners and web developers. We do not store the content or URLs you analyze — each run is independent and computed on demand.
For feedback or to suggest improvements, please reach out via the contact page.