Quick answer: Keyword Density Checker is a free online tool that lets you paste any text to see exactly how often each keyword appears. Get total words, unique words, your top keyword's density, and a full top-20 keyword table. No account or install needed — it runs entirely in your browser, free.
Paste any text to see exactly how often each keyword appears. Get total words, unique words, your top keyword’s density, and a full top-20 keyword table.
What is the Keyword Density Checker?
A keyword density checker measures how frequently each word or phrase appears in your text, expressed as a percentage of the total word count. If a 500-word article uses the phrase “organic coffee” 10 times, its density is 2 percent. This number helps writers see at a glance whether their target keywords appear often enough to signal relevance — or so often that the text reads as spam.
Search engines no longer reward keyword stuffing the way they did in the early 2000s, but density still matters as a diagnostic. Very low density can mean a page never clearly states its topic, while very high density often produces awkward, repetitive copy that both readers and Google dislike. Most SEO professionals aim for a natural range around 1 to 2 percent for primary keywords, letting synonyms and related terms fill out the rest.
This tool strips common stopwords like “the”, “and”, and “is” so the results focus on meaningful words. It reports total words, unique words, your top keyword with its exact density, and a ranked table of the top 20 keywords with counts and percentages.
How to use the Keyword Density Checker
Paste your article, blog post, or page copy into the text box. There is no word limit for typical content.
Click Analyze Density. The tool counts every word, removes common stopwords, and ranks the remaining keywords.
Read the stat cards first: total words, unique words, and your top keyword with its density percentage.
Scan the top-20 table to check that your target keyword ranks near the top and that no filler word dominates.
If density is above 3 percent for any keyword, rewrite those sentences with synonyms before publishing.
Keyword Density Checker use cases
Optimizing blog posts
Before hitting publish, run your draft through the checker to confirm your focus keyword appears naturally throughout the text. If it barely registers, weave it into a few more headings and paragraphs; if it dominates, dilute it with synonyms and related phrases.
Auditing existing pages
Paste the copy from an underperforming page to diagnose relevance problems. A page that never repeats its target keyword may not be signaling its topic clearly to search engines, while one stuffed with it may be triggering spam filters.
Competitor content analysis
Copy the text of a competitor’s high-ranking page and check which keywords they emphasize. Their density patterns reveal the terms they are targeting, giving you a starting point for your own content brief.
Freelance writing QA
Writers and editors can verify that commissioned articles hit the requested keyword frequency without overstuffing. It is a fast, objective check that replaces guesswork during proofreading and keeps client deliverables consistent.
Tips
Aim for 1 to 2 percent density on your primary keyword. Anything above 3 percent risks reading as spam to both humans and algorithms.
Do not chase density for a single exact phrase. Use natural variations and synonyms, which modern search engines understand as the same topic.
Check density per section, not just the whole article. A keyword crammed into one paragraph and absent elsewhere looks unnatural.
Stopwords are removed automatically, so short filler words will not pollute your top-20 table.
Frequently asked questions
What is a good keyword density for SEO?
Most SEO professionals consider 1–2% a healthy range for a primary keyword. There is no official target from Google, and modern ranking depends far more on topic coverage and quality. Use density as a sanity check for natural writing, not as a number to hit exactly. Going far above 2% rarely helps and often reads poorly; going near 0% suggests the page never clearly states its topic.
What is keyword stuffing?
Keyword stuffing is repeating a keyword unnaturally to manipulate rankings. Search engines penalize it and readers find it unreadable. If your density is above 3%, rewrite with synonyms and natural phrasing instead of repeating the exact phrase. Classic stuffing patterns — footer keyword lists, invisible text, and comma-separated keyword strings — are trivially detected by modern search engines. Write for readers first.
Does keyword density still matter in 2026?
It matters as a diagnostic, not as a ranking lever. Google understands topics and synonyms now, so exact-phrase repetition is unnecessary. The checker is most useful for spotting two extremes: pages that never state their topic and pages that repeat it awkwardly. Semantic coverage matters more: a page about ‘running shoes’ should naturally mention sizing, terrain, and brands, not just repeat the head term.
What are stopwords and why are they removed?
Stopwords are extremely common words like ‘the’, ‘is’, ‘and’, and ‘of’ that carry almost no meaning. The tool strips them so your top-20 table shows the words that actually define your content instead of being crowded out by grammatical filler. The cleaned table reveals your real topical vocabulary — the nouns and verbs that tell a reader (and Google) what the page is about.
Can I check density for phrases, not just single words?
This tool analyzes single words, which is the standard way density is measured. To check a multi-word phrase, note the densities of its individual words and read the text to confirm the full phrase appears naturally in headings and body copy. For phrase analysis, search engines look at proximity and co-occurrence, not just raw counts. Natural placement in headings carries more weight than repetition.
How much text can I analyze at once?
Typical articles, blog posts, and full page copy — thousands of words — are fine. Since everything runs in your browser, very large documents may take a moment, but your text is never uploaded anywhere. Full e-books and scraped datasets can be analyzed too, though the browser tab will work harder. For everyday content work, performance is instant. For typical content work, it feels instantaneous.
Is my text stored or sent to a server?
No — the analysis runs entirely in your browser with JavaScript. Your content never leaves your device, so you can safely analyze unpublished drafts, client copy, or proprietary text. The page works offline once loaded. Client NDAs and embargoed launches stay safe because the text never leaves your machine. Analyze first drafts here before they exist anywhere public. Draft freely; analysis stays entirely private.