Free Online Keyword Density Checker

1. Paste your article, blog post or page copy into the text box.
2. Switch between single words, 2-word phrases and 3-word phrases to inspect different term lengths.
3. Toggle "ignore common stop words" to hide filler words like the, and, of when viewing single words.
4. Read the frequency table — each row shows the term, its raw count and its density percentage.
5. Aim for natural usage rather than a target number; rewrite passages where one term dominates.

Keyword density is the percentage of times a word or phrase appears relative to the total word count of a page. The classic single-word formula is (occurrences ÷ total words) × 100. For phrases, the denominator is the number of n-gram positions, so a bigram's density divides by (total words − 1). This tool computes single words (unigrams), two-word phrases (bigrams) and three-word phrases (trigrams) so you can see the multi-word terms you actually compete for, not just isolated words.

There is no official "correct" density. The often-quoted 1-2% figure is a rough guideline, not a ranking signal — modern search engines use semantic analysis and entity recognition rather than counting keyword repetitions, and stuffing a term unnaturally can trigger spam classifiers. Density is most useful as a diagnostic: if your target phrase barely appears, the page may be under-optimized; if it dominates, the copy probably reads awkwardly.

Everything runs in your browser on the text you paste. Nothing is uploaded, and the tool never fetches a URL, so it works on drafts, gated content and competitor copy you paste in for comparison.