Keyword Density Checker — Free Online Tool

The Keyword Density Checker counts how often each word and phrase appears in a piece of content and expresses it as a percentage of the total word count, breaking out single words, two-word phrases, and three-word phrases separately so you can see which terms the page actually emphasises.

The honest framing is important here, because keyword density is a metric whose original purpose no longer exists. Search engines in the early 2000s did weight raw term frequency, which produced a decade of content stuffed to hit a magic percentage. Google has not worked that way for many years — it evaluates meaning, related terminology, and how comprehensively a page covers a topic, not how many times a phrase repeats. There is no target density that improves rankings, and the old advice to aim for two or three percent is obsolete.

What the tool is still genuinely good for is diagnosis in two directions. Unusually high density is a warning sign: if a phrase is at four or five percent, the copy almost certainly reads as repetitive and unnatural to a human, which is itself a ranking problem. And near-zero density for your actual topic reveals the opposite failure — a page about accounting software that never plainly says "accounting software" gives Google very little to work with.

Analysis runs entirely in your browser; the content you paste is never uploaded, which matters for drafts and client work.

Our Keyword Density Checker is completely free to use with no signup required. For this tool, processing runs in your browser — your files and data stay on your device and are not uploaded to our servers.

Whether you are a developer, designer, student, or business owner, this tool is designed to save you time and make your workflow more efficient. Bookmark this page to access it whenever you need it — it will always be free.