Keyword Density Checker
Check the keyword density and word frequency of any text online. Paste your content to see how often each keyword and phrase appears, with counts and density percentages for one, two, and three word phrases, plus an optional stop-word filter.
| Keyword | Count | Density |
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Paste some text and click Analyze to see keyword density.
ToolsSoup's Keyword Density Checker is a free online tool that measures how often each keyword and phrase appears in your text. Paste an article, blog post, product description, or any content and instantly get a ranked table of the most frequent keywords, their exact count, and their density as a percentage of the text. Switch between single words, two-word phrases, and three-word phrases, hide common stop words like the and and, and copy the results in one click. Everything runs in your browser — no uploads, no sign-up, and your content never leaves your device.
What is keyword density?
Keyword density is the percentage of times a keyword or phrase appears in a piece of text compared with the total number of words. If a 500-word article uses the phrase running shoes ten times, its keyword density is two percent. Density is a quick way to see which terms a page is really about and whether a target keyword shows up often enough to be relevant — without being repeated so much that it reads as spam. Writers, editors, and SEOs use a keyword density checker to balance their content, spot overused words, and make sure the main topic comes through clearly to both readers and search engines.
How to check keyword density
Checking the keyword frequency of your content takes only a few seconds:
- Paste or type your text into the box above.
- Choose the phrase length — 1 word, 2 words, or 3 words — to count single keywords or longer phrases.
- Turn on Ignore common stop words to hide filler words like the, and, and of.
- Pick how many results to show, then click Analyze.
- Read the ranked table of keyword, count, and density percentage, and click Copy results to export them.
One, two, and three word phrases
A single keyword tells you which individual words dominate your text, but real search queries are usually phrases. This checker counts n-grams — runs of one, two, or three consecutive words — so you can see the most common phrases, not just isolated terms. One-word mode finds your top keywords, two-word mode surfaces pairs like keyword density or running shoes, and three-word mode reveals longer-tail phrases your content already emphasizes. Comparing the three views helps you confirm that your target phrase appears as a phrase, not just as scattered words.
Why filter stop words?
Stop words are the most common words in a language — the, a, and, of, to, is, and similar filler — and they almost always top a raw frequency list without telling you anything about the topic. Turning on the stop-word filter removes them so the meaningful keywords rise to the top. For single words it drops the stop words entirely; for two- and three-word phrases it skips any phrase that contains one, so the results focus on substantive terms. Leave the filter off when you want a literal count of every word in the text.
What is a good keyword density?
There is no single magic number, and modern search engines do not reward stuffing a page with a target term. As a rough guide, many writers aim for a primary keyword density of around one to two percent and let related terms appear naturally. The goal is readable, useful content where the main topic is clearly present, not a page padded with repetitions. Use this checker to catch keywords that are wildly overused or barely present, then edit for clarity rather than chasing an exact percentage.
Why use this keyword density checker?
- See the most frequent keywords and phrases with exact counts and density percentages.
- Count single words or two- and three-word phrases to match real search queries.
- Optional stop-word filter hides common filler words so the topic stands out.
- Ranked table shows your top keywords at a glance, with a copy-to-clipboard export.
- Live word and unique-keyword totals for a quick overview of any text.
- Runs entirely in your browser — your content is never uploaded or stored.
Frequently asked questions
What is a keyword density checker?
It is a tool that analyzes a block of text and reports how often each keyword or phrase appears, both as a raw count and as a percentage of the total words. It helps writers and SEOs understand which terms their content emphasizes.
How is keyword density calculated?
Density is the number of times a keyword appears divided by the total number of word slots, multiplied by 100. For multi-word phrases the total is the number of phrase positions of that length, so the percentages always reflect the chosen phrase length.
What is a good keyword density for SEO?
There is no exact target. A primary keyword density of roughly one to two percent is a common rule of thumb, but writing naturally matters far more than hitting a number. Use the checker to avoid both overusing and underusing your main term.
What are stop words and should I filter them?
Stop words are common filler words like the, and, of, and to that dominate raw counts without describing the topic. Turning on the filter hides them so your meaningful keywords rank at the top. Leave it off for a literal count of every word.
Can I check two-word and three-word phrases?
Yes. Use the phrase length selector to count single words, two-word phrases, or three-word phrases. This lets you see common phrases and longer-tail keywords, not just isolated words.
Is my text private?
Absolutely. All analysis happens locally in your browser using JavaScript, so the text you paste is never sent to or stored on any server.