How to use this tool
- Paste your draft into the box above.
- Check the Unigrams tab for single-word frequency, with a green badge on any word in the 0.5–2% SEO range.
- Switch to Bigrams or Trigrams to catch repeated two- and three-word phrases.
What counts as good keyword density?
The current consensus among SEO practitioners puts the useful range at 0.5% to 2% for a primary keyword. Below 0.5%, the term likely isn't prominent enough for search engines to identify it as a real topic focus. Above roughly 3%, the repetition starts to look like stuffing rather than natural emphasis, which can work against you rather than for you.
That range isn't a hard rule enforced anywhere. It's a rough proxy for "does this page clearly cover its topic without repeating itself unnaturally." A 2,000-word article using its main keyword phrase 10 times sits at 0.5%, comfortably in range. The same article using it 60 times sits well above 3%, and probably reads badly to a human before it ever becomes an algorithmic problem.
Why word count alone doesn't tell the story
Two drafts can use a keyword the exact same number of times and land at very different densities, because density is a ratio, not a raw count. A 500-word page repeating a phrase 10 times sits at 2%. The same 10 repetitions in a 2,500-word page sit at 0.4%. Neither the count nor the percentage alone tells you if the usage reads naturally. You have to look at both, plus the page itself.
Bigrams and trigrams matter more than most people check
Single-word density catches obvious repetition. It misses phrase-level repetition entirely. A page can use the word "counter" a reasonable number of times while accidentally repeating the exact phrase "free online counter" nine times in a row, which reads as stiff and repetitive even though no single word crossed a density threshold.
Checking your two- and three-word phrase frequency catches this. It's also useful for a second reason: your most-repeated bigrams and trigrams are often a more accurate signal of what your page is actually about than any single keyword you set out to target.
A practical way to use this tool
- Write your draft without worrying about density at all. Cover the topic the way you'd explain it to someone.
- Paste it in and check where your primary term lands. If it's under 0.5%, look for a natural place to reinforce the topic, not force the exact phrase in repeatedly.
- Check the bigram and trigram tabs for anything that reads mechanical when you see it listed out of context.
- Read the piece out loud once more. If a repeated phrase sounds fine in your ear, the number backing it up rarely matters much.