Keyword Density Checker
Free online keyword density checker. No sign-up, no installation. Runs entirely in your browser.
What is Keyword Density?
Keyword density is the percentage of times a specific keyword appears in your content compared to the total word count. The formula is: (Keyword Count ÷ Total Words) × 100 = Density %
While keyword density was historically important for SEO, modern search engines like Google focus more on content quality, relevance, and user experience. However, maintaining a healthy keyword density (1-2% for your primary keyword) still helps search engines understand your content's topic.
How to Use This Tool
- Paste your content: Add your article, blog post, landing page, or any text you want to analyze into the textarea
- Enter a keyword (optional): Type a specific keyword you want to track, or leave it empty and enable "Auto-detect" to find the top 20 most frequent phrases
- Configure stop words: Enable the stop words filter to exclude common English words like "the", "and", "is" — this helps focus on meaningful keywords
- Run the analysis: Click "Analyze Density" to process your content
- Review results: Check your keyword count, density percentage, and see all instances highlighted in the content preview
- Optimize: Adjust your content to reach the optimal 1-2% density range for your target keyword
Common Use Cases
Blog Posts & Articles: Verify your primary keyword appears at a healthy density without feeling repetitive or forced. Most articles naturally fall in the 0.5-2% range.
Landing Pages: Ensure key value propositions and conversion keywords are present but not over-optimized. Balance commercial keywords with natural language.
Content Audit: Analyze your own content or competitors' to understand keyword strategies and identify optimization opportunities.
SEO Research: Use n-gram analysis (1-word, 2-word, 3-word phrases) to discover related keywords, synonyms, and topic clusters that naturally appear in high-ranking content.
⚠️ Warning: Avoid keyword stuffing (density > 3%). Search engines penalize unnatural, keyword-heavy content and prioritize readability and user engagement instead.
Frequently Asked Questions
What keyword density should I aim for in 2024?
Modern SEO recommends 1-2% density for your primary keyword. Anything above 3% risks being flagged as keyword stuffing. Today's search algorithms prioritize natural language, user intent, and content quality over exact keyword ratios. Focus on writing for humans first, and optimize for search second.
Why does this tool filter stop words?
Stop words are extremely common English words (the, and, is, to, etc.) that add little semantic value. Filtering them helps you focus on meaningful keywords that actually signal what your content is about. This makes the keyword analysis more useful for SEO decisions.
What are 1-grams, 2-grams, and 3-grams?
These are n-grams — sequences of words. A 1-gram is a single word (e.g., "SEO"), a 2-gram is a two-word phrase (e.g., "keyword density"), and a 3-gram is a three-word phrase (e.g., "keyword density checker"). Analyzing multiple n-grams helps you find common phrases and topics in your content.
Does this tool work with non-English content?
Yes, the tool will count keywords in any language. However, the stop words filter is English-only. For non-English content, you can disable the stop words filter in the dropdown to get more accurate results.
Is my content private and secure?
Absolutely! This tool runs entirely in your browser using JavaScript. No data is sent to any server, and your content never leaves your device. It's safe to analyze confidential or proprietary content.
How does keyword count differ from keyword density?
Keyword count is the absolute number of times a word appears (e.g., "SEO" appears 8 times). Keyword density expresses this as a percentage of total words (e.g., 8 occurrences in 400 words = 2% density). Density is more useful for SEO because it accounts for content length — a 5,000-word article can afford more keyword mentions than a 500-word article.