Keyword Density Checker

Keyword Density Checker

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Track specific keywords to see their density in your content

Analysis Options

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Total Words
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Unique Words
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Avg Word Length
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Lexical Diversity

Target Keyword Analysis

#KeywordCountDensityDistribution
#PhraseCountDensityDistribution
#PhraseCountDensityDistribution

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Research long tail keywords for better targeting.

What is Keyword Density Checker

Keyword Density Checker helps you see which words and phrases stand out in your draft so you can tune your copy without guesswork. Too much repetition feels spammy; too little emphasis blurs your topic. The free Keyword Density Checker by FlexiTools.io analyzes single words, 2-word and 3-word phrases, and any target keywords you care about. In the next 60 seconds, you can paste content, adjust options, click Analyze Density, and review counts, percentages, and simple SEO recommendations.

How to Use Our Keyword Density Checker

  1. Paste content and set targets
  • Add your text in Content to Analyze. Optionally list Target Keywords separated by commas to track specific terms.
  1. Choose analysis options
  • Set Min Word Length, pick how many to show in Show Top Keywords, keep Exclude common stop words on, and include 2-word & 3-word phrases. Then click Analyze Density.
  1. Review the results
  • See Total Words, Unique Words, Avg Word Length, and Lexical Diversity. Use the tabs to switch between Single Words, 2-Word Phrases, and 3-Word Phrases. Each table shows Rank, Keyword or Phrase, Count, Density, and a Distribution bar.
  1. Act and share
  • Check Target Keyword Analysis and SEO Recommendations for quick fixes. Click Export Report (CSV) to save a spreadsheet or Copy Results to paste into your notes. Use Clear All or Load Sample as needed.

Why FlexiTools.io Offers the Best Keyword Density Checker

Word and phrase analysis in one view

Single terms alone can mislead. This tool also measures 2-word and 3-word phrases so you see real topics, not just stems.

Flexible filters that match your intent

Min Word Length and stop word removal keep noise down, while Top N and phrase toggles help you focus on what matters right now.

Target tracking plus quick exports

Track key terms in a dedicated panel and export the full report as CSV. Copy a clean summary with one click.

FlexiTools.io vs typical alternatives

  • FlexiTools.io: Single, 2-word, and 3-word tabs - Alternatives: Words only
  • FlexiTools.io: Min length, stop words, and Top N controls - Alternatives: Fixed settings
  • FlexiTools.io: Target Keyword Analysis and SEO tips - Alternatives: Raw counts with no guidance
  • FlexiTools.io: CSV export and Copy Results - Alternatives: Gated or missing exports

A Deeper Look at Keyword Density and On-page Signals

What density measures - and what it misses

Keyword density is the share of words taken by a term or phrase. It points to prominence, which can be useful, but it is not a promise of better rankings. Two texts can have the same density and read very differently. One may be helpful and clear; the other may repeat a term in awkward ways. Treat density as a quick health check, not a goal to chase.

Search guidance has been clear for years: avoid stuffing terms unnaturally. Overuse leads to a poor reading experience and can be flagged as spammy. If you need a reference, see Google’s guidance about avoiding keyword stuffing on Google Search Central, which warns against repetitive or unnatural use of words simply to manipulate visibility. Helpful content wins because it answers a need, not because it hits a magic percentage.

Phrases vs single words

Single-word tallies often bubble up function words or stems that don’t explain intent. Phrases do a better job. For example, “credit card” expresses a topic; “credit” alone is too broad. Likewise, “best running shoes” is more useful than separate counts of “best,” “running,” and “shoes.” That’s why this tool reports both 2-word and 3-word phrases. It gives you a cleaner signal about topics and avoids chasing isolated tokens.

When scanning the phrase tabs, ask: does the top list reflect the actual promise of the page? If you’re writing a guide to cold brew coffee, you should see phrases like “cold brew,” “brew time,” or “coffee concentrate,” not a random mix of filler. If the top phrases don’t match, adjust headings and body copy so your main ideas appear naturally.

Stop words, min length, and lexical diversity

Stop words like “the,” “and,” or “of” rarely help with topic focus. Excluding them keeps results clean. Min Word Length also trims noise from very short fragments that slip past simple filters. These settings reduce clutter so you can focus on meaningful terms.

Lexical diversity - the ratio of unique words to total words - offers a quick feel for variety. A very low value can hint at repetition. A very high value might mean lots of rare words that can slow reading. There’s no single right number. Use it as a nudge: if diversity is low and density for one term is high, prune repeats or swap in natural synonyms where meaning stays the same.

Reasonable ranges and spam risk

There is no universal “ideal” density. Advice like “2-3 percent for every term” ignores context. A branded product page that must repeat a model name will look different from a how-to article. Rather than aiming for a fixed number, look for balance:

  • Your main topic should appear in titles, headings, and the opening lines in natural language.
  • Key phrases should show up enough to signal relevance, not so often that sentences feel forced.
  • Secondary phrases should support the main idea without crowding it.

If you spot high density for a non-topic term - for example, a boilerplate phrase repeated in every paragraph - reduce it. If you see a top phrase that is off-topic, consider rewriting the sentence or moving that detail to a more fitting section.

Beyond density: structure and clarity help

Even perfect density cannot save confusing structure. Clear headings, short paragraphs, and plain language help readers and search engines understand a page. For fundamentals on how search evaluates content quality, read Google’s guidance on creating helpful, reliable content on Google Search Central. On the markup side, semantic HTML from the W3C - for example, proper use of headings and lists - gives your page a logical outline that tools can parse. Density is one lens; structure and clarity finish the job.

A simple workflow you can repeat

  • Paste your draft and run the analysis.
  • Check Target Keyword Analysis to confirm your main terms appear at reasonable levels.
  • Review the phrase tabs. Do the top phrases match your topic? If not, tighten headings and first paragraphs.
  • Scan SEO Recommendations and trim repetition or add a missing phrase once where it fits.
  • Export the CSV for a quick record or to compare versions. Re-run after edits.

Pro-Tips for Getting the Most Out of Keyword Analysis

  • Write first, measure second - draft a helpful page, then use density to find repeats and gaps.
  • Prefer phrases in headings - a clear 2- or 3-word phrase in a heading signals topic without stuffing.
  • Fix one thing per pass - remove a repeated filler phrase, re-run, then adjust secondary phrases if needed.
How is keyword density calculated?
The tool divides the count of a term or phrase by the total word count and expresses the result as a percentage. You’ll see this for single words and, when enabled, for 2-word and 3-word phrases. Density is a signal, not a score to hit, so focus on natural use.
Why analyze 2-word and 3-word phrases?
Phrases capture intent better than single tokens. For example, “organic fertilizer” is more informative than “organic” or “fertilizer” alone. Viewing both single and multi-word results helps you confirm the page theme without overemphasizing isolated words.
What does Exclude common stop words do?
It removes very common words like “the,” “and,” and “of” from counts so the top list reflects meaningful terms. Keeping this on usually produces cleaner, more useful results. You can toggle it off if you need a raw view.
What are Lexical Diversity and Avg Word Length?
Lexical Diversity is unique words divided by total words, shown as a percentage. Lower values often mean more repetition. Avg Word Length hints at word complexity. Neither is a ranking factor on its own - they are quick cues to guide edits.
Can I export or share the report?
Yes. Click Export Report (CSV) to download a spreadsheet of your results, or Copy Results to place a structured summary on your clipboard. These options make it easy to compare drafts or pass findings to a teammate.