Free Keyword Density Calculator
Calculate your SEO keyword density and optimize your e-commerce content without risking over-optimization.
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Try PropulseCom for freeWhat is keyword density?
Keyword density refers to the percentage of times a keyword or phrase appears in a text relative to the total number of words.
It's an SEO indicator that measures the importance given to a term in your content. A density that's too low means the keyword isn't present enough. A density that's too high may be perceived as spam by Google.
Concrete example:
If your product sheet contains 200 words and the phrase "leather shoes" appears 4 times, the density is 2% (4 ÷ 200 × 100).
How to calculate keyword density?
The calculation formula is simple:
Density (%) = (Number of keyword occurrences ÷ Total number of words) × 100
For a multi-word phrase (e.g., "men's leather shoes"), each complete occurrence of the phrase counts as one occurrence.
Our free tool above performs this calculation automatically and gives you the exact number of occurrences, the density percentage, and a visual indicator (optimal, too low, over-optimization).
What is the ideal keyword density?
There's no absolute rule, but SEO experts agree on these ranges:
| Density | Interpretation |
|---|---|
| < 0.5% | Too low - Keyword not present enough |
| 0.5% - 2% | Optimal - Recommended zone |
| 2% - 3% | Acceptable - Upper limit |
| 3% - 5% | Warning - Risk of over-optimization |
| > 5% | Danger - Likely keyword stuffing |
Our recommendation: Aim for a density between 1% and 2% for your main keyword. This represents approximately 1 to 2 occurrences per 100 words.
For an e-commerce product sheet of 150-300 words, this means: keyword in the title (H1), 2-4 natural occurrences in the text, and possibly in a subheading (H2).
How to avoid over-optimization (keyword stuffing)?
Keyword stuffing is a black hat SEO practice that involves excessively repeating a keyword to manipulate Google rankings.
Since 2012, Google has severely penalized this practice through its Panda and Penguin algorithms. Consequences can include: sudden drop in your rankings, partial or total site de-indexation, manual Google penalty.
Signs of over-optimization to avoid:
- Same keyword repeated in every sentence
- Text that's difficult to read naturally
- Density above 5%
- Hidden keywords (white text on white background)
Best practices:
- Write for your readers first, not for Google
- Use synonyms and semantic variations
- Integrate keywords naturally into the text flow
- Check your density with our tool before publishing
Why analyze keyword density in your product sheets?
For an e-commerce site, every product sheet is an opportunity to rank on Google. Analyzing keyword density allows you to:
- ✅ Optimize your SEO: Ensure your main keyword is sufficiently present
- ✅ Avoid penalties: Detect over-optimization before it hurts your SEO
- ✅ Improve quality: Well-balanced content is more enjoyable to read
- ✅ Standardize your sheets: Maintain consistency across your entire catalog
With thousands of products, manually checking each sheet becomes impossible. That's why PropulseCom automatically generates optimized descriptions with the right keyword density.
FAQ - Frequently Asked Questions
Is keyword density still important for SEO?
Yes and no. Google has confirmed it no longer uses density as a direct ranking criterion. However, a keyword that's absent or too rare won't allow Google to understand your page's topic. The goal is to achieve a natural balance, generally between 1% and 2%.
How do I use this keyword density tool?
Paste your text (product sheet, article, description) into the designated area. Enter the keyword you want to analyze. The tool instantly calculates the density and tells you if it's optimal or needs adjustment.
What's the difference between raw and weighted density?
Raw density simply counts occurrences divided by total words. Weighted density assigns more weight to keywords placed in strategic areas (title, H1, first paragraph). Our tool calculates raw density, which remains the most commonly used indicator.
Should I analyze the density of every product sheet?
Ideally yes, especially for your flagship products. For large catalogs, PropulseCom automates this optimization by generating descriptions with calibrated SEO density.
How many different keywords can I analyze?
Our tool analyzes one keyword at a time (which can be a multi-word phrase). Analyze your different keywords successively to get a complete view of your text's optimization. Usage is unlimited and free.
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