Keyword Density Checker
Paste your content and see exactly how often your target keywords appear β and whether you're under, over, or right in the sweet spot.
Suggestions
What Is a Keyword Density Checker?
A keyword density checker measures how often a target keyword or phrase appears in a piece of content relative to the total word count, expressed as a percentage. It's a quick way to sanity-check whether a page is naturally on-topic for the terms it's trying to rank for, without manually counting occurrences by hand.
Density on its own isn't a ranking factor the way it was in the early days of SEO, but wildly uneven usage β a keyword that never appears, or one repeated so often it reads unnaturally β is still worth catching before a page goes live.
How the Score Is Calculated
Each check looks at three factors:
| Factor | What it checks |
|---|---|
| Density range | Whether your primary keyword's density falls in a natural, healthy range β generally 0.5% to 2.5% for most web content. |
| Distribution | Whether keyword mentions are spread through the text rather than clustered in one section. |
| Over-optimization risk | Whether any keyword is repeated so often it would read as stuffed to a human reader. |
What Counts as a Healthy Density
There's no single "correct" number, but as a practical guideline, a primary keyword sitting between roughly 0.5% and 2.5% of total words tends to read naturally while still signaling relevance. Below that range, the topic may not come through clearly; above it, sentences often start to feel repetitive or forced. For more on why over-repeating keywords can backfire, see the Wikipedia entry on keyword stuffing, and for foundational guidance on writing keyword-aware content that still reads naturally, see the Copywriting Guide for Beginners on the blog.
Related Tools
- Headline Analyzer β score your title for clarity and click-through potential.
- Meta Description Generator β SEO-ready meta descriptions in one click.
- Readability Checker β score how easy your text is to read.
- Blog Topic Idea Generator β turn a niche into ready-to-use post ideas.
See the full list on the Free AI Writing Tools page.