Tool
What the Keyword Density Checker does
Keyword Density Checker: checks Total words and Unique content terms from Page content and Target keyword (optional). Example: target keyword (optional) (empty) gives total words 33.
Total words and Unique content terms, derived from Page content and Target keyword (optional). Each change is reflected immediately, which suits quick what-if comparisons.
Small on-page details decide whether a listing gets clicked or scrolled past. The Keyword Density Checker exists to take that particular chore off your hands.
Because it is all local, the tool is as fast as your device and as private as your own notes.
If you want to check the arithmetic, the field table, the method and a worked example are further down.
What do the Keyword Density Checker fields mean?
The Keyword Density Checker uses 2 inputs. Every box starts with a working value, so there is a real result on screen before you touch anything.
| Field | What to enter | Default |
|---|---|---|
| Page content | paste or type any amount of text | Paste the visible text of your page here. The checker counts single words and two- and three-word phrases, ignoring common stop words, and reports how often each appears as a share of total words. |
| Target keyword (optional) | optional | none |
How does the Keyword Density Checker work?
Each output is derived from the inputs above in a single pass; there is no hidden state carried between runs, so the same inputs always give the same check.
The guard clauses run before the formula does, which is why mistakes surface next to the field.
Worked example
These are the values the Keyword Density Checker loads by default, and the result it produces from them. The figures are the tool’s live defaults and its live output, so you can reproduce them exactly.
| Page content | Paste the visible text of your page here. The checker cou… |
|---|---|
| Target keyword (optional) | (empty) |
| Total words | 33 |
|---|---|
| Unique content terms | 22 |
Why there is no target percentage
Keyword density as a concept dates to an era of far more literal search engines. It has not been a Google ranking signal for a long time, and chasing a specific percentage today mainly risks the opposite problem.
Worth knowing
- Modern ranking systems assess topical relevance through the whole page’s meaning: synonyms, related entities and natural phrasing all register as relevant, not just exact keyword repetition.
- Deliberately repeating a phrase past the point of natural writing is specifically named in Google’s spam policies as keyword stuffing, treated as a violation to fix, not merely a wasted effort. This tool’s "high density" warning is flagging that risk, not a ranking-formula input.
- The more useful reading of this tool’s output is diagnostic: spotting a phrase repeated by accident during editing, not hitting a target number before publishing.
Read next: Title Tags and Meta Descriptions: What Still Matters
How to use it
- Paste your content into Page content.
- Type Target keyword (optional).
- Live output means you can search for a target value by nudging an input up and down.
- The panel reports Total words and Unique content terms.
- The link encodes your inputs, so saving it is enough to reproduce the result later.
What this tool does not do
- Search engines weigh hundreds of signals. No single on-page check predicts position.
- This inspects the markup you supply; it cannot see server headers or your live rankings.
- Nothing is saved between visits, so keep your own record of anything you need again.
Frequently asked questions
Page content and Target keyword (optional). That is the whole form. Defaults are loaded for all of them, letting you treat it as a what-if tool rather than a data-entry form.
With the values loaded when the page opens, total words comes out as 33. That number tracks the inputs, so a small edit shows its sensitivity immediately.
Nothing is stored. The page has no back end to send data to, and holds your input only in memory.
Free, and there is no upsell. The whole tool is the free version.
Reliable for the case described. Where more than one convention exists, the method section says which one is used.