Word Density

Analyze word frequency and density in text. View top words, 2-word and 3-word phrases with occurrence counts and percentages.

Analyze word frequency and density in text. View top words, 2-word and 3-word ph...

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Key Features

100% Free

No registration required, unlimited checks

Instant Results

Real-time analysis with detailed output

REST API Access

Integrate into your workflow via API

Accurate Data

Live queries to authoritative sources

What is Word Density?

The word density analyzer (keyword density checker) counts the frequency of every word and multi-word phrase in your text. It displays the top single words, 2-word bigrams, and 3-word trigrams ranked by occurrence count with density percentages. This is one of the most important SEO content analysis tools — keyword density directly affects how search engines understand your page's topic relevance.

Use it to verify your target keywords appear at the optimal frequency (1-3%), detect accidental keyword stuffing that could trigger search engine penalties, identify unintentional word repetition that makes text feel monotonous, analyze competitor content to understand their keyword strategy, and ensure even keyword distribution throughout your text rather than front-loading.

How to Use

  1. 1Paste your text into the input area — analysis happens in real-time
  2. 2View the most frequent single words ranked by occurrence count and density percentage
  3. 3Check 2-word bigram and 3-word trigram phrase frequencies for multi-word keyword analysis
  4. 4Verify your target keywords appear at 1-3% density — the optimal SEO range
  5. 5Identify overused words or phrases that make your text repetitive

Who Uses This

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Frequently Asked Questions

What is keyword density and what is the optimal range?
Keyword density is the percentage of times a specific word or phrase appears in your text relative to the total word count. For SEO, a density of 1-3% for your primary target keyword is generally considered optimal. Below 1% may not be enough for search engines to associate your page with that keyword. Above 3-5% risks being flagged as keyword stuffing. The ideal approach is natural writing where keywords appear organically throughout the content.
How do I check the keyword density of my content?
Paste your text into the Word Density tool — it automatically calculates the frequency and density percentage of every word and multi-word phrase. Find your target keywords in the results to verify their density. The tool shows single words, 2-word phrases (bigrams), and 3-word phrases (trigrams), so you can check both individual keywords and multi-word phrases like 'email marketing' or 'project management software'.
What is keyword stuffing and how do I avoid it?
Keyword stuffing is the practice of unnaturally overusing target keywords to try to manipulate search rankings. Google and other search engines penalize this behavior with lower rankings or manual actions. Signs of stuffing: the same keyword appearing in every sentence, keyword density above 3-5%, keywords inserted where they don't fit grammatically, and hidden text with repeated keywords. To avoid it: write naturally for humans first, use synonyms and related terms (LSI keywords), and let the density tool confirm your keyword usage is within the natural range.
Why should I analyze 2-word and 3-word phrases, not just single words?
Many valuable search queries are multi-word phrases: 'project management', 'email marketing tool', 'best running shoes'. Analyzing bigrams and trigrams reveals whether these complete phrases appear often enough in your content for search engines to associate your page with those queries. A page might use 'email' and 'marketing' frequently as individual words but rarely as the combined phrase 'email marketing' — the density tool catches this discrepancy.
How does keyword density differ from TF-IDF?
Keyword density is a simple ratio: occurrences divided by total words. TF-IDF (Term Frequency-Inverse Document Frequency) is a more sophisticated metric that weighs how often a term appears in your document against how common it is across all documents. A word with high keyword density but also high frequency across the web (like 'the') gets a low TF-IDF score, while a word that's frequent in your document but rare elsewhere gets a high score. Modern SEO tools increasingly use TF-IDF analysis, but keyword density remains a useful quick-check metric.