Free Keyword Density Checker

Analyze the keyword density of any web page or text. Spot over-optimization and fine-tune your content to help improve rankings. Powered by Semrush data.

No login requiredInstant results3 free daily checks

Instantly Check Your Keyword Density

Drop in a URL or paste your text. The density breakdown shows every keyword’s frequency, count, and percentage — so you can see at a glance whether your page emphasizes the right terms.

Get density, word counts, and frequency data
See which terms appear most on your page
Start using it with zero SEO experience
Check from any device, desktop or mobile

Spot Over-Optimization Before Google Does

Keyword stuffing tanks rankings. This report flags any term that crosses the line so you can fix it before Google notices.

Find terms that exceed safe thresholds
See when the same phrases pile up
Check exact percentages for every term
Fix stuffing with data, not guesswork

Analyze 1-Word, 2-Word, and 3-Word Phrases

Single keywords tell part of the story. Multi-word phrases reveal what your content is really about.

View 1-word, 2-word, and 3-word density
Spot the phrases your page leans on most
Compare frequency across all three levels
Flag patterns single-word counts miss

Analyze Any URL or Paste Your Own Text

Paste a URL and the tool pulls content from the live page. Or paste your draft text to check density before you publish.

Pull density data from any live URL
Paste drafts to check before publishing
Exclude stop words or add custom filters
Focus on keywords that affect rankings

Go Deeper with Semrush One

This tool helps you check one page for keyword usage. Try Semrush One Free for 14 Days to research better keyword targets, track rankings, and monitor how your brand appears in AI search.

Find keywords your content should target
Track rankings for your most important pages
Audit your site for technical and on-page SEO issues
Monitor visibility across Google and AI search

Keyword Density Checker FAQ

Yes. You get 3 free checks per day. No account or credit card required.

The tool scans your page's text and calculates how often each word and phrase appears relative to the total word count. You get density percentages for single words, two-word phrases, and three-word phrases.

There's no single "ideal" number. Most SEO professionals target 1-2% for primary keywords. Anything above 3-4% for a single term is worth reviewing. The tool highlights high-density terms so you can decide if they need adjustment.

Yes. Switch to the "Paste Text" tab and drop in your draft content. The tool analyzes it the same way it would a live URL.

This tool checks keyword density for a single page or text block. Semrush's On Page SEO Checker analyzes your entire site, compares each page against the top 10 competitors, and gives you prioritized fixes for content, links, and technical SEO. Try it free for 14 days.

No. The Keyword Density Checker works without an account. Creating a free Semrush account gives you access to keyword research, backlink analytics, and AI visibility tracking with up to 10 queries per day.

Yes. Open the Options panel below the search bar to exclude common stop words or add your own custom exclusion list. This filters out noise so you can focus on the terms that matter.

Density alone isn't a ranking factor, but it's a useful diagnostic signal. Unnaturally high density can signal over-optimization to search engines. Low density for target terms may signal weak topical relevance. Use it alongside content quality, search intent, and competitive analysis.

Single-word analysis counts individual terms. Two-word analysis counts consecutive pairs like "content marketing." Three-word analysis counts phrases like "search engine optimization." Multi-word analysis often reveals more useful patterns than single words alone.

Check before publishing any new content. Re-check after major edits or content refreshes. For important pages, run a quarterly audit to catch drift from your target optimization levels.