Free Keyword Density Checker
Paste your content and instantly analyse keyword frequency across 1-word, 2-word, and 3-word phrases. Spot over-optimised keywords, check density percentages, and track your target keyword — all for free.
Phrase Analysis
Analyse 1-word, 2-word, and 3-word phrases with frequency counts and density percentages
Target Tracking
Enter a target keyword to see its exact count and density with colour-coded guidance
Stuffing Alerts
Get instant warnings when any keyword exceeds 3% density to avoid search engine penalties
Enter your blog post, landing page, or any content to analyse keyword density and frequency.
Try a Sample Text
Click any example to see keyword density analysis in action.
How to Use Keyword Density for Better SEO
Follow these best practices to optimise your content without over-optimising.
1. Aim for 1-2% Density on Your Primary Keyword
Your primary keyword should appear naturally throughout your content at roughly 1-2% density. For a 1,000-word article, that means 10-20 occurrences. Place your keyword in the title, first paragraph, at least one subheading, and naturally throughout the body. Let the density flow from natural writing rather than forced insertion.
2. Watch for Over-Optimisation Above 3%
When any keyword exceeds 3% density, search engines may flag the content as potentially manipulative. This keyword density checker highlights phrases above 3% in red so you can spot problems immediately. If you see warnings, replace some instances with synonyms, pronouns, or related phrases to bring the density down.
3. Use Multi-Word Phrases Strategically
Two-word and three-word phrases (long-tail keywords) are where real SEO value lives. Check your 2-word and 3-word tabs to ensure your target phrases appear consistently. A phrase like “content marketing strategy” needs fewer appearances than a single word like “marketing” to signal relevance.
4. Diversify With Semantic Keywords
Modern search engines understand context and synonyms. Instead of repeating the same keyword, use semantically related terms. If your target keyword is “keyword density checker”, also include phrases like “keyword frequency tool”, “keyword analysis”, and “content optimisation”. This signals topical depth without risking over-optimisation.
5. Check Density Before and After Editing
Run your content through the keyword density checker at two stages: after your first draft (to see natural keyword patterns) and after final edits (to confirm you have not over-corrected). This two-pass approach ensures your content reads naturally while hitting the right SEO signals.
6. Prioritise Readability Over Density Targets
Keyword density is a guideline, not a rule. Content that reads naturally and answers user intent will always outperform content written to hit a specific density number. Use this tool to catch obvious problems — not to engineer every paragraph. Pair it with our readability checker for a complete content quality audit.
Frequently Asked Questions
Everything you need to know about keyword density and on-page SEO
What is keyword density?
Keyword density is the percentage of times a keyword or phrase appears in your content relative to the total word count. It is calculated by dividing the number of times a keyword appears by the total number of words, then multiplying by 100. For example, if your keyword appears 5 times in a 500-word article, the keyword density is 1%.
What is the ideal keyword density for SEO?
Most SEO professionals recommend a keyword density between 1% and 2% for your primary keyword. Some content can go up to 3% without issues, but exceeding 3% risks triggering keyword stuffing penalties. The key is to write naturally and ensure keywords fit the context rather than forcing a specific density target.
What is keyword stuffing and how does it hurt SEO?
Keyword stuffing is the practice of unnaturally overloading content with keywords to try to manipulate search rankings. Google and other search engines penalise keyword stuffing because it creates a poor user experience. Signs include keyword densities above 3%, awkward repetition, and hidden text packed with keywords. It can result in lower rankings or removal from search results.
How do I calculate keyword density?
The formula is: (Number of times keyword appears / Total word count) x 100. For multi-word phrases, count each occurrence of the exact phrase. For example, if “content marketing” appears 8 times in a 1,000-word article, the density is (8 / 1000) x 100 = 0.8%. A keyword density checker automates this for all phrases in your content.
Does keyword density still matter for SEO?
While Google has moved beyond simple keyword matching to understand semantic meaning and context, keyword density still matters as a baseline check. It helps ensure your primary keyword appears enough times for search engines to understand your topic, and it catches over-optimisation before it becomes a problem. Modern SEO strategy combines keyword density awareness with semantic relevance and natural language patterns.
What are stop words and why are they excluded?
Stop words are common words like “the”, “is”, “at”, and “or” that appear frequently in all text but carry little topical meaning. They are excluded from keyword density analysis because they would dominate the results and obscure the actual topic-relevant keywords. This tool filters stop words to show only meaningful words and phrases.
Should I check density for 2-word and 3-word phrases?
Yes. Multi-word phrases (also called n-grams or long-tail keywords) are often more valuable for SEO than single words because they match user search intent more precisely. Checking 2-word and 3-word phrase density helps you identify your content's topic clusters and ensures your target long-tail keywords appear at the right frequency.
How can I reduce keyword density without losing SEO value?
Use synonyms and related terms instead of repeating the same keyword. Incorporate LSI (Latent Semantic Indexing) keywords that are semantically related. Expand your content with more supporting paragraphs and examples. Rewrite sentences to use pronouns or rephrase the concept. Focus on answering user questions naturally rather than hitting a density target.
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