Word Frequency Counter & Keyword Density Checker
Find which words repeat most in your text and how often. Free keyword density checker with a stopword filter — spot overused words before you publish.
🔒 100% Client-Side Processing
Your data is processed entirely in your browser and never transmitted to any server.
Document 0 / 100M Limit
0Total Words
0Unique Words
Top 20 Most Frequent Words
Paste text above to see word frequency.
Common Use Cases
Checking SEO keyword density
Paste a draft article and confirm your target keyword appears often enough to signal relevance without tipping into keyword stuffing.
Spotting overused words while editing
Find the words and filler phrases you lean on without noticing — "really," "just," "very" — and cut them before publishing.
Checking vocabulary variety
Compare unique word count against total word count to gauge how repetitive or varied a piece of writing is.
Frequently Asked Questions
- What is keyword density?
- Keyword density is how often a specific word or phrase appears in a piece of text, usually shown as a percentage of the total word count. It's used in SEO to check whether a target keyword appears often enough to signal relevance without being repeated so much it reads as spam ("keyword stuffing").
- What is a good keyword density percentage for SEO?
- Most SEO guidance suggests roughly 1–2% for a primary keyword — for a 1,000-word article, that's about 10–20 mentions. There is no strict rule search engines enforce; density far above that risks looking like keyword stuffing rather than helping rankings.
- Why are common words like "the" and "and" excluded?
- With the stopword filter on, function words (the, a, is, and, of...) are removed before counting, since they always dominate any frequency list without revealing anything about the actual content. Turn the filter off to see raw, unfiltered word frequency including those words.
- What counts as a "unique" word?
- Each distinct word after lowercasing — so "Run" and "run" count as the same word, but "run" and "running" count separately since they are different word forms, not the same root word grouped together.
- Is my data private when I use this tool?
- Yes. This tool runs entirely in your browser using client-side JavaScript — nothing you type is transmitted to, logged by, or stored on any server. You can safely process confidential text, tokens, or code.