Free Keyword Density Checker
Check keyword frequency and density percentages across your content. Inspect 1-word, 2-word, and 3-word n-gram phrases, filter stop words, and prevent keyword stuffing.
Target Keyword Analysis
"seo"
Natural (1% - 2.5%)
| Phrase / Term | Count | Density |
|---|---|---|
| search | 5 | 6.76% |
| website | 3 | 4.05% |
| engine | 2 | 2.70% |
| seo | 2 | 2.70% |
| content | 2 | 2.70% |
| optimization | 1 | 1.35% |
| practice | 1 | 1.35% |
| orienting | 1 | 1.35% |
| rank | 1 | 1.35% |
| higher | 1 | 1.35% |
| result | 1 | 1.35% |
| pages | 1 | 1.35% |
| focuses | 1 | 1.35% |
| organic | 1 | 1.35% |
| visibility | 1 | 1.35% |
| rather | 1 | 1.35% |
| paid | 1 | 1.35% |
| advertising | 1 | 1.35% |
| master | 1 | 1.35% |
| 2026 | 1 | 1.35% |
Search engines prioritize natural semantic depth and comprehensive topic coverage over a rigid mathematical density ratio.
How to Use Free Keyword Density Checker
Paste your blog article, web copy, or draft text into the analysis field above. Optionally provide your primary target keyword to track its exact occurrences and density percentage specifically. The tool calculates total word count, unique words, and reading duration in real time. Explore frequency tables for top single words, 2-word phrases, and 3-word n-grams. Toggle stop-word filtering to eliminate noise words (like 'the', 'and', 'in') and review visual keyword highlighting across your original text.
Paste Content
Paste your article draft, webpage text, or marketing copy.
Review N-Gram Phrases
Examine frequency tables for single words, 2-word, and 3-word phrases.
Adjust Density & Export
Identify unnatural keyword repetition and export the analysis to CSV.
Why Monitoring Keyword Density Matters
While modern search engines no longer follow a rigid 'target keyword density' formula, monitoring phrase frequency is critical for quality control. Over-optimizing an article by repeating your target keyword unnaturally (keyword stuffing) creates a jarring reading experience and triggers Google spam filters. Conversely, analyzing multi-word phrase frequency reveals whether your draft naturally covers related topical themes or if important supporting subtopics were accidentally neglected.
Want this done for you?
Zonified handles keyword research, writes SEO-optimized articles, discovers backlink opportunities, analyzes performance, runs SEO audits and publishes content to your website every week. Automate your entire SEO workflow instead of running individual tools manually.
Frequently Asked Questions
Clear answers to common questions about how this tool works, search engine behavior, and practical SEO best practices.
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