Free Tool
Keyword Density Checker
Paste your page content (or give us a URL) and get real on-page term-frequency analysis: word count, keyword density, and the phrases that actually recur in your text.
What this measures, and what it doesn't
This is genuine single-document term-frequency analysis: word/character counts, how often your target phrase appears relative to total word count, and which words and phrases actually recur in this text. It does not compare your content against competitors or a search corpus (that requires TF-IDF against a document collection this tool doesn't have). Treat it as a content audit for this one page, not a competitive ranking signal.
What does a keyword density checker actually calculate?
This tool counts every word in your pasted content or fetched page, tallies how often each word and 2-word phrase repeats, and, if you gave it a target phrase, works out what share of the total word count that phrase makes up. It is genuine single-document term-frequency math, the same basic calculation search engines have used for decades to gauge what a page is about, run against your actual text rather than an estimate.
Why does keyword density still matter if Google uses AI now?
Modern search engines rely far more on semantic understanding and context than on exact-match keyword counting, so chasing a specific density percentage is outdated advice on its own. But density is still a useful diagnostic in reverse: a target phrase sitting at 0.1% can mean a page is not clearly about what you think it is about, and a phrase repeated unnaturally often is a real signal of keyword stuffing that both readers and algorithms notice. Use it to sanity-check clarity and natural repetition, not to hit a magic number.
Google's own guidance on writing helpful, people-first contentCommon questions
Is there an ideal keyword density percentage to aim for?
No single number is correct for every page. The commonly cited 1 to 2 percent range is a rough sanity check, not a target search engines actually enforce. Writing naturally for the reader first, then checking the density did not end up either near-zero or noticeably repetitive, is a more reliable process than writing to hit a percentage.
Why does the tool flag my content as hard to read?
The readability flag is based on average sentence length, not keyword usage. Long, run-on sentences are harder for both human readers and text-extraction systems (including AI answer engines) to parse cleanly. Breaking a 40-word sentence into two shorter ones usually helps both readability and how cleanly an AI system can quote or summarize the passage.
Should I use this tool instead of paying for a tool like SurferSEO or Clearscope?
Not as a full replacement. Paid content-optimization tools compare your text against the top-ranking pages for a query using a real search corpus, which requires paid API access this free tool does not have. This tool is a genuine, single-document term-frequency audit: a solid first check before you publish, not a competitive content-gap analysis.