Rext AI

Keyword Density Checker

Keyword Density Checker powered by Rext AI lets you find out exactly how often your keywords show up and whether that's helping your SEO or not.

Keyword Density Best Practices

  • •Aim for 1-3% keyword density for optimal SEO
  • •Use keywords naturally - avoid keyword stuffing
  • •Include variations and related keywords
  • •Focus on user experience over keyword density

What Is a Keyword Density Checker?

Keyword density is the percentage of times a specific word appears in a piece of content; for example, if you write a 1,000-word article and mention "your targeted keyword ten times, your density for that phrase sits at 1%.

Rext AI lets you skip the hassle of manually counting keywords by introducing a free Keyword Density Checker, which provides you with complete information related to keyword density.

Instead of scanning line-by-line through a document to tally up repetitions, Rext AI’s Keyword Density Checker provides you with the exact count in seconds and saves your time.

As we all know, ranking doesn’t depend on using a keyword under a specific count because Google’s algorithm has evolved well past simple word counting. This makes the Rext AI checker a critical tool for catching two specific problems that can kill your visibility:

  1. Under-optimization: The danger of barely mentioning your target keyword, causing the page to read as if it’s about something else entirely.
  2. Over-Optimization: The more common issue today, where keywords are crammed in so frequently that the writing sounds robotic and triggers Google’s spam systems.

According to most studies and professionals, a general use of 1–2% for a primary keyword, flexibility is key for ranking, but keyword density alone can’t promise ranking.

This is where Rext AI shines as the solution because our tool provides you with free counting, so you can catch the problem before publishing and fix it, not after your rankings have already dropped.

How to Use the Keyword Density Checker

  1. List your target keywords, and paste them in the targeted keyword box.
  2. Paste your content in the Analyze content box.
  3. Results load instantly with the Rext AI keyword checker tool- no waiting, no processing screen.
  4. Toggle stop words on or off. Turning them off gives you a cleaner density reading by ignoring words like "the," "and," and "is" that inflate word count without adding topical weight.
  5. Plus, our tool provides you with the top ten keywords you have used most in your content, along with how many times they are being used.  
  6. Cross-check against top-ranking competitors. Run the same tool on the top three or four pages ranking for your keyword and compare their density to yours. That comparison tells you more than any fixed percentage rule ever will.

Keyword Density Checker Examples

Example 1 — Blog post check: A 1,500-word article targeting "meal prep for beginners" mentions the phrase 18 times. Density: 1.2% — comfortably within the healthy range for a primary keyword on a page this length.

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Key Features of Rext AI’s Keyword Density Checker

  • Stop word filtering — get a cleaner, more accurate density reading by excluding filler words.
  • Stuffing alerts — automatic flags when a keyword crosses into over-optimization territory.
  • Multiple keyword tracking — provides your top 10 keywords with their usage.
  • Overall Word Counting — provides you with the total word count of content.
  • No account required — run a quick check without logging in.

FAQ

What's a good keyword density percentage?

Most SEOs work within a 1–2% range for a primary keyword, though this varies by content length, industry, and competition. Treat it as a sanity check, not a strict rule; natural, readable content matters more than hitting an exact number.

Can keyword stuffing actually get my page penalized?

Yes. Google's algorithms are built to detect unnatural keyword repetition, and pages that read as spammy or manipulative can see reduced visibility. It's rarely one specific percentage that triggers it; it's the overall pattern of unnatural, repetitive phrasing.

Should I check density for exact-match keywords or variations too?

Both. Modern SEO rewards topical coverage over exact-match repetition. Checking your primary keyword alongside synonyms and related phrases gives you a more realistic picture of how well the content covers the topic.

Does this tool check density for a live URL, or only pasted text?

Both. Paste raw text for drafts still in progress, or enter a URL to pull and analyze content that's already published.

Is a low keyword density always a bad sign?

Not necessarily, because if your content naturally covers a topic using varied language and synonyms instead of repeating one exact phrase, a lower density for that specific phrase can still rank well; search engines read for meaning and relevance, not just repetition.

Related tools:

  • If your content has too many or too few targeted keywords and you want to write again, consider Content Outline Generator for the best and smartest outline plan that properly structures your content, so your keyword placement feels natural from the start.

  • After checking keyword density, make sure that your keyword shows up in your meta description too, without sounding forced, with our free Meta Description Generator. 

Ready to Balance Your Keywords?

Paste your content and see your exact keyword density in seconds, for free- no sign-up required.

[ Check My Keyword Density ]

Unsatisfied with your content? Wanna write again? Wait a minute- are you going to spend your hours writing content again? 

Rext AI is here to make your writing easy; just give your target keyword and see how perfectly that keyword is fixed in human-like content that is SEO optimized and ready to publish.