How to use the Keyword Density Checker
Analyse keyword density in four steps:
1
Paste your content
Paste any article, blog post, or page copy into the input area.
2
Set filters
Toggle 'Hide stop words' to remove grammatical filler. Set minimum word length (2–5 characters) to exclude very short words.
3
Read the frequency table
All content words ranked by frequency with count and percentage, colour-coded by SEO density zone.
4
Search a specific keyword
Type any keyword into the search box to see its exact count, density percentage, and SEO zone classification instantly.
When to use this tool
Use the keyword density checker for SEO content analysis and optimisation:
- →Verifying that your target keyword appears at the recommended 1–2% density in an article before publishing
- →Identifying keyword stuffing — over-use above 3–4% — that may trigger search engine penalties
- →Analysing top-ranking competitor content to understand their keyword usage patterns
- →Reviewing and balancing keyword distribution throughout a long-form article or landing page
- →Auditing old content for under-optimised pages where target keywords appear at below 0.5% density
- →Checking that secondary and LSI keywords are represented at appropriate supporting densities
Frequently asked questions
Q:What is the ideal keyword density for SEO?
Most SEO practitioners and studies recommend a keyword density of 1–2% for a primary target keyword. This means a 1,000-word article should contain the keyword 10–20 times. Below 0.5% may suggest the topic is under-covered for that keyword. Above 3–4% increasingly looks like keyword stuffing, which Google's algorithms are designed to detect and discount or penalise.
Q:What are stop words and why should I filter them?
Stop words are high-frequency grammatical words that appear in virtually all text regardless of topic — 'the', 'and', 'is', 'in', 'of', 'to', 'a', 'that', and similar function words. They carry no topical signal for search engines. Filtering them reveals the content-bearing words that actually matter for keyword analysis, making the frequency table far more useful for SEO purposes.
Q:Does keyword density still matter for modern SEO?
Keyword density as a direct ranking signal has diminished with modern Google algorithms. However, it remains a useful proxy for whether a page covers a topic adequately. The more sophisticated signal today is TF-IDF (Term Frequency–Inverse Document Frequency), which compares a keyword's frequency in your document against its frequency across the wider web. Keyword density is a simplified version of the same idea.
Q:How is keyword density percentage calculated?
Keyword density is calculated as: (number of times the keyword appears / total word count) × 100. For example, if the word 'SEO' appears 15 times in a 1,000-word article, its density is 1.5%. The tool applies this formula to every word in the text and displays the results sorted by frequency in the table.
Q:Can I check the density of a multi-word phrase (keyphrase)?
Yes — type a multi-word phrase (e.g. 'keyword density') into the keyword search box. The tool searches for exact whole-phrase matches in the text and reports the count and density for that specific phrase, distinct from the individual word frequencies shown in the main table.
Q:Can I export the keyword frequency data?
Yes — click the Download button in the frequency table header to export the full keyword frequency list as a CSV file containing word, count, and density columns. You can open this directly in Excel, Google Sheets, or any data analysis tool for further SEO analysis.