Keyword Density Analyzer
Paste your content to see the most frequent keywords and phrases, with density percentages and stuffing warnings.
Free, no sign-upUpdated
Use the tool
How to use it
- • Density shows how often a phrase appears relative to the text length
- • There's no magic number, but anything above ~4% usually reads as keyword stuffing
- • Two- and three-word phrases reveal what your page is actually about better than single words
- • Results update automatically as you type
What it analyzes
Paste any text and the tool calculates:
- Single keyword frequency and density % across the full text
- Two-word phrase frequency: reveals topic focus better than single words
- Three-word phrase frequency: shows whether you’re covering specific subtopics
- Stuffing warnings when a term appears at a density that risks over-optimization
- Total word count
How to interpret density
There’s no universal target density: the right number depends on page length and topic. But patterns matter: a primary keyword appearing at 5%+ in a 1,000-word article is usually a signal of over-optimization, not thoroughness. Two- and three-word phrases are more useful than single keywords because they expose what the content is actually about, not just which words appear most.
How to use it
- Paste your full draft or a specific section into the text area
- Toggle stopword filtering to remove filler words (the, and, of…)
- Review the top phrases and check if they match your target keywords
- If your target keyword is missing from the top results, it’s under-used; if it dominates, reduce repetition
Where keyword density actually matters
Keyword density is more useful as a diagnostic than a target. Use it to catch content that’s drifted off-topic, AI-generated drafts that over-repeat phrases, or legacy pages written around exact-match keyword counts that now read unnaturally. Compare a top-ranking competitor’s phrase distribution against your own to find gaps in coverage.
Frequently asked questions
Is this keyword density checker free?
Yes, free and no signup. Paste text or analyze a section instantly.
What is the ideal keyword density?
There is no ideal number. Write naturally and use this to catch under-coverage or stuffing, not to hit a target percentage.
Is keyword density still a ranking factor?
Not in the old sense. Google focuses on relevance and intent. Use density only as a sanity check.
Related tools: readability checker and meta tags analyzer. Background reading: keyword cannibalization.