Keyword Density Checker
Analyze keyword frequency and density for SEO optimization
Enter Your Text
SEO Tips
- • Ideal keyword density: 1-2% for primary keywords
- • Avoid keyword stuffing (over 3%)
- • Use variations and synonyms naturally
- • Focus on content quality, not just density
Try These Tools Too
More free productivity tools to speed up your workflow
Everything You Need to Know
Complete guide, features, use cases, and frequently asked questions
What is a Keyword Density Checker? Complete Guide
A keyword density checker analyzes your content to show how frequently keywords appear. Our 2026 keyword density checker goes beyond basic tools with intelligent stop word filtering, real-time analysis, and percentage-based optimization recommendations. It shows the top 20 keywords with frequency counts and density percentages for data-driven SEO decisions.
How to Check Keyword Density
- Paste or type your content into the text area
- Analysis starts automatically as you type
- View total word count at the top of results
- Review top 20 keywords sorted by frequency
- Check density percentage for each keyword
- Identify keywords appearing too often (>3-5%)
- Look for missing target keywords (0 occurrences)
- Adjust content to optimize keyword balance
- Re-check density after edits to verify improvements
Key Features
Real-Time Analysis
Instant keyword analysis as you type - no need to click buttons.
Top 20 Keywords
Shows most frequent keywords with counts and density percentages.
Word Count
Total word count helps contextualize keyword density percentages.
Density Percentage
Accurate calculation of how often each keyword appears relative to total words.
Smart Filtering
Ignores common stop words and focuses on keywords 4+ characters for meaningful SEO data.
Frequency Ranking
Keywords sorted by frequency so you spot over-optimization instantly.
Use Cases
Blog Post Optimization
Ensure your blog posts have optimal keyword density for target keywords without over-stuffing.
Content Audit
Analyze existing pages to identify keyword imbalances and optimization opportunities.
Competitor Analysis
Check keyword usage on competitor pages to inform your content strategy.
Landing Page SEO
Optimize landing pages for primary keywords while maintaining natural readability.
Product Descriptions
Balance product keywords in e-commerce descriptions for better search visibility.
Academic Writing
Ensure balanced term usage in research papers and academic content.
Why Use Our Checker?
- ✓100% free with unlimited checks
- ✓Real-time analysis - no waiting
- ✓Top 20 keywords with frequency and density
- ✓Percentage calculations for easy SEO decisions
- ✓Smart filtering excludes common stop words
- ✓No registration or login required
- ✓Works for any text length
- ✓Helps avoid keyword stuffing penalties
- ✓Identifies missing target keywords
- ✓Mobile and desktop compatible
Keyword Density Checker Comparison - How We Compare to Competitors
| Feature | 10xTools Keyword Density Checker | SEO Review Tools | PrePostSEO | SmallSEOTools | AIOSEO | Yoast SEO |
|---|---|---|---|---|---|---|
| Price (Free Forever) | ✅ 100% Free | ❌ Freemium | ❌ Freemium | ❌ Freemium | ❌ Paid Plugin | ❌ Paid Plugin |
| Top 20 Keywords | ✅ Top 20 | ✅ Top 20 | ✅ Top 15 | ✅ Top 10 | ✅ Unlimited | ✅ Single Key |
| Stop Word Filtering | ✅ Smart Filter | ✅ Included | ✅ Included | ✅ Included | ✅ Included | ✅ Included |
| Density Percentage | ✅ Percentage | ✅ Percentage | ✅ Percentage | ✅ Percentage | ✅ Percentage | ❌ Not Available |
| Real-Time Analysis | ✅ Real-Time | ✅ Real-Time | ✅ Real-Time | ❌ Manual | ✅ Real-Time | ✅ Real-Time |
| Word Count | ✅ Included | ❌ Not Available | ✅ Included | ✅ Included | ✅ Included | ✅ Included |
| No Registration | ✅ No Signup | ✅ No Signup | ❌ Signup Required | ❌ Signup Required | ❌ WordPress Required | ❌ WordPress Required |
| Privacy (Client-Side) | ✅ 100% Private | ❌ Server Upload | ❌ Server Upload | ❌ Server Upload | ✅ Local | ✅ Local |
| No Ads | ✅ No Ads | ❌ Has Ads | ❌ Has Ads | ❌ Has Ads | ❌ No Ads | ❌ No Ads |
| Unlimited Usage | ✅ Unlimited | ❌ Limited | ❌ Limited | ❌ Limited | ✅ Unlimited | ✅ Unlimited |
✅ = Feature Available | ❌ = Not Available or Limited
FAQs
What is ideal keyword density?
2-3% for primary keywords, 1-2% for secondary keywords. Higher than 5% risks keyword stuffing penalties. Lower than 1% may signal weak topical relevance.
Does keyword density affect SEO?
Yes, but it's just one factor. Natural keyword usage signals relevance to search engines. Over-optimization (stuffing) can result in penalties.
What are stop words?
Common words like "the," "and," "is," "of" that search engines typically ignore. Our tool filters words under 4 characters to focus on meaningful keywords.
Should all keywords have the same density?
No! Your primary keyword should appear most frequently (2-3%), with secondary keywords at 1-2%. Variation signals natural, quality content.
Can I check competitor keyword density?
Yes! Copy competitor page content, paste into the tool, and analyze their keyword strategy to inform your own content.
Is keyword density still important in 2025?
Yes, but less than before. Modern SEO focuses on topical authority and semantic relevance, but density still matters for on-page optimization.
What if my target keyword has 0% density?
Add it! A keyword with 0% density can't rank. Aim for at least 1-2% for target keywords while keeping content natural.
Does the tool count variations?
The tool counts exact matches. "keyword" and "keywords" are counted separately. For full analysis, check both singular and plural forms.
Explore Our Tools
Discover more free online tools to boost your productivity