Free Keyword Density Checker - SEO Keyword Analysis Tool

What is a Keyword Density Checker?

A keyword density checker analyzes your content to show how frequently keywords appear. Our tool calculates the percentage of times each keyword appears in your text, helping you optimize for SEO without keyword stuffing. 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

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.

Keyword Density Checker

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