Keyword Density Analyzer
Calculate TF-IDF and keyword frequency percentage to optimize content for SEO. Detects keyword stuffing and identifies the most prominent terms in your text.
Single Keywords
2-Word Phrases
About
The Keyword Density Analyzer measures how often specific words or phrases appear in your text relative to the total word count. In the early days of SEO, a high density (keyword stuffing) was a ranking signal. Today, search engines like Google prefer natural language, typically favoring a keyword density between 1% and 3%.
This tool helps you balance your content. It identifies your primary keywords to ensure the search engine understands your topic, while simultaneously warning you if you have overused a term, which could trigger spam filters.
Formulas
The calculation excludes common 'stop words' (like 'a', 'the', 'of') to reveal the topical relevance of substantive terms. The tool generates n-grams (1-word, 2-word phrases) to detect repeated long-tail keywords.
Reference Data
| Metric | Definition | Target Range |
|---|---|---|
| Absolute Frequency | Total count of a specific keyword. | Varies by length |
| Keyword Density | (Count / Total Words) * 100. | 1% - 2.5% |
| Stop Words | Common words (the, and, is) usually ignored by SEO. | Excluded by tool |