Keyword density is the percentage of times a word appears in a piece of text compared with the total number of words. This keyword density checker counts your words in the browser, removes common filler words, and shows the terms you use most often along with each one’s density, so you can see at a glance what your copy is actually about.
What Keyword Density Is and the Formula
Keyword density measures how often a specific word or phrase appears relative to the whole text. If a 1,000 word article uses the word “backup” 12 times, the density of “backup” is 1.2 percent. The number tells you how prominent a term is in your writing. A density near zero means the topic is barely mentioned; a very high density means one word is repeated so much that the writing starts to feel mechanical. The checker above computes this for every word and lists the ten most frequent, after setting aside common words like “the” and “and” that carry no topical meaning.
How to Use It
- Paste your article, page copy, or draft into the content box.
- Read the total word count and scan the top terms list to see what your text emphasizes.
- Type a focus keyword in the optional field to see that term’s exact count and density.
- Check that your main topic appears among the top terms and reads naturally, not forced.
- Edit and paste again; the results update as you type, so you can adjust copy on the spot.
The Formula
What a Healthy Density Looks Like
There is no magic number. Search engines have never published a target density, and chasing a specific percentage produces awkward writing that helps no one. A useful guide is to let your main term appear often enough to be unmistakably present, which usually lands somewhere under a few percent for natural copy, then stop thinking about the number. If your focus keyword shows up among the top terms and the text reads well out loud, the density is fine. Writing for the reader first almost always produces a sensible density on its own.
Why Topical Coverage Beats Density Today
Modern search engines read meaning, not just word counts. They recognize synonyms, related concepts, and the questions a topic raises, so a page that covers a subject fully will outrank one that simply repeats the same keyword. That means the better question is not “what is my density” but “have I covered what a reader expects on this topic.” Use the checker to confirm your main term is present and not overused, then spend your effort on depth: related terms, clear explanations, and the subtopics a thorough page should include. Density is a sanity check, not a strategy.
When to Use It
Reach for a density check when you finish a draft and want to confirm your topic actually comes through, when you suspect a page repeats one phrase too much, or when you are reviewing older content that reads as thin or stuffed. It is also handy for spotting the opposite problem: a page that never quite names its own subject. Run the text, read the top terms, and let the list tell you whether your writing matches your intent.
Last Thoughts on Keyword Density
Keyword density was once treated as a number to hit. It is better understood as a mirror: it shows you what your writing emphasizes so you can confirm the page is about what you intended. Use it to catch a missing topic or an overused phrase, then put the percentage aside and write for the person reading.
Run your latest draft through the checker above, then pair it with our word counter to track length and our meta length checker to keep titles and descriptions in range. Explore the rest of our free online tools when you are done.
Key Takeaways:
- Keyword density is keyword count divided by total words, times 100, expressed as a percentage.
- There is no magic target number; a term that appears naturally and reads well is at a healthy density.
- Keyword stuffing, repeating a term far past what sounds human, is treated as spam and can hurt a page.
- Topical coverage matters more than density; search engines reward pages that cover a subject fully.
- This checker runs in your browser, removes common filler words, and updates as you type.
- Use the optional focus keyword field to see one term’s exact count and density.
Frequently Asked Questions (FAQs)
What is a good keyword density?
There is no official target. Search engines have never published a recommended density, and aiming for a fixed percentage tends to produce awkward writing. A practical guide is to let your main term appear often enough to be clearly present while the text still reads naturally, which usually lands under a few percent. If the page sounds good read aloud, the density is fine.
How is keyword density calculated?
Divide the number of times the keyword appears by the total number of words in the text, then multiply by 100. For example, a term used 8 times in a 400 word article has a density of 2 percent. For a multi-word phrase, the count is the number of times the full phrase appears together.
Why does this tool exclude some words?
The top terms list skips common filler words such as “the,” “and,” “of,” and “to” because they appear in almost every sentence and tell you nothing about the topic. Removing them surfaces the words that actually describe what your text is about. The total word count still includes every word.
Can keyword density hurt my rankings?
Only when it is too high. Repeating a term far beyond what reads naturally is keyword stuffing, which search engines treat as spam and may penalize. A normal density that comes from writing for the reader does not hurt anything. The risk is overuse, not the metric itself.
Does the checker send my text anywhere?
No. The text you paste is analyzed entirely inside your browser and is never uploaded, logged, or stored on any server. You can disconnect from the internet and the tool still works, which confirms nothing is sent.
Should I write to a target density?
No. Writing to hit a number produces stilted copy and ignores what readers and search engines actually reward, which is full coverage of the topic. Use density as a sanity check to confirm your main term is present and not overused, then focus on covering the subject thoroughly.
