Keyword Density Checker — Free Online Tool
Last updated: January 2025
Start typing to see live statistics
What is Keyword Density Checker?
Keyword Density Checker analyzes your text and shows the most frequent 1, 2, and 3-word phrases with their occurrence percentage.
When to use Keyword Density Checker?
Use it for SEO content analysis, checking for keyword overuse (stuffing), optimizing blog posts, and competitive content research.
How to use this tool
- 1Paste your content in the text area
- 2Click 'Analyze' to find keyword density
- 3Review top unigrams, bigrams, and trigrams
Examples
| Input | Output |
|---|---|
| (SEO article about case converters) | Top keyword: 'case converter' at 2.3% density |
| (Blog post) | Top 20 keywords with occurrence counts and % shown |
| (Marketing copy) | Reveals which phrases dominate the copy |
| (Product description) | Bigrams and trigrams show natural phrase patterns |
| (Academic paper) | Technical terms and their relative frequency |
Rules & Behavior
- Stop words (the, a, and, etc.) are filtered by default
- Shows top 20 for unigrams, bigrams, and trigrams
- Density = keyword occurrences / total words × 100%
Related Tools
Frequently Asked Questions
What is keyword density?
Keyword density is the percentage of times a keyword appears in your text compared to the total word count. A density of 1-2% is generally ideal for SEO.
What is a good keyword density for SEO?
Google recommends writing naturally. Most SEO experts suggest 1-2% for your primary keyword. Above 3-4% may be seen as keyword stuffing.
What are bigrams and trigrams?
Bigrams are 2-word phrases; trigrams are 3-word phrases. Analyzing these shows which phrases naturally dominate your content.
Are stop words filtered?
Yes, common stop words like 'the', 'a', 'and', 'is' are excluded by default so you see meaningful keywords.
Can I use it to check competitor content?
Yes, paste any text from a webpage (copied from the browser) and analyze its keyword density to understand their content strategy.