Paste your content and check keyword density instantly. Optimize your SEO without over-stuffing. Free, no sign-up required.
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How It Works
No account needed, no sign-up required. Completely free. Enter your keyword and paste your content to instantly see your density score, word count, and top words.
Type the keyword or phrase you want to analyze. This can be a single word like "SEO" or a multi-word phrase like "content marketing strategy." The tool matches exact occurrences in your text.
Copy your article, blog post, product description, or any web page content and paste it into the text area. The tool counts every word and scans for your keyword automatically.
See your keyword density as a percentage, the total word count, how many times your keyword appears, and the 10 most frequent words in your content. No sign-up required. Completely free.
The Formula
This free keyword density checker uses a straightforward formula to measure how often your target keyword appears in your content relative to the total word count.
Keyword Density
Keyword Density = (Keyword Occurrences / Total Words) x 100
Example: 15 occurrences / 1,000 words x 100 = 1.5% keyword density
Keyword density tells you what percentage of your content is made up of a specific keyword. In the example above, a 1.5% density means that for every 100 words, your keyword appears roughly 1.5 times. That falls in the optimal range for most content types.
The formula counts exact-match occurrences of your keyword as whole words. Partial matches and variations are not counted, which gives you a precise measure of how focused your content is on that specific term. For broader analysis, review the top 10 words list to see which terms dominate your content.
A density of 1-3% is generally considered optimal for SEO. Below 0.5% suggests your content may not be strongly associated with the keyword. Above 5% risks triggering keyword stuffing penalties. The goal is natural, reader-friendly keyword integration that also signals relevance to search engines.
Context matters. A 2% density in a 2,000-word article (40 mentions) looks very different from 2% in a 200-word product description (4 mentions). Longer content gives you more room to vary your phrasing while maintaining healthy density levels.
Density Guide
Use this table to interpret your keyword density score. Each range maps to a recommendation so you know exactly how to adjust your content.
| Density Range | Status | Recommendation |
|---|---|---|
| 0% - 0.5% | Too Low | Add more natural keyword mentions |
| 0.5% - 1% | Acceptable | Could be stronger, especially in headings |
| 1% - 3% | Optimal | Ideal range for most content types |
| 3% - 5% | High | Review for natural readability |
| 5%+ | Keyword Stuffing | Reduce immediately to avoid penalties |
Sources: Moz, Ahrefs, SEMrush — 2026 best practices.
Density by Content Type
Different content formats have different optimal density ranges. Use these benchmarks to set the right target before you start writing or editing.
| Content Type | Target Density | Notes |
|---|---|---|
| Blog posts (1,000-2,000 words) | 1% - 2% | Natural mentions in headings, intro, and body. Longer content needs less density to rank. |
| Product pages | 1.5% - 3% | Short pages need slightly higher density. Place keywords in title, features, and descriptions. |
| Landing pages | 2% - 3% | Focused pages with a single conversion goal benefit from strong keyword presence. |
| Pillar content (3,000+ words) | 0.5% - 1.5% | Long-form content ranks for many related terms. Primary keyword density can be lower. |
| Category pages | 1% - 2% | Brief intro text with keyword-rich product or subcategory listings. |
| FAQ pages | 1% - 2.5% | Questions naturally repeat keywords. Pair with FAQ schema for rich results. |
Benchmarks based on industry analysis and content performance data, 2026.
What Kills Your Keyword Strategy
Most keyword problems are caused by habits, not algorithms. These six mistakes silently hurt your rankings and push search engines away.
Using the identical keyword phrase over and over reads unnaturally and signals manipulation to search engines. Vary your phrasing with synonyms, related terms, and partial matches. Google understands semantic equivalents.
Use 2-3 synonyms or variations for every primary keywordDensity alone does not tell the full story. Where your keyword appears matters as much as how often. Keywords in titles, H1 tags, the first 100 words, and meta descriptions carry more weight than keywords buried in the middle of a paragraph.
Place keywords in title, H1, first paragraph, and subheadingsKeyword density is a guideline, not a rule. Chasing a specific number leads to awkward phrasing that hurts readability and engagement. Write for humans first, then check density to make sure you are in a reasonable range.
Prioritize readability over hitting a target percentageHiding keywords in white text, alt tags, meta keywords, or CSS-hidden elements is a black-hat technique. Search engines detect it and penalize accordingly. Every keyword instance should be visible and useful to the reader.
All keyword usage must be visible to usersShort pages with high keyword density look spammy. If your content is under 300 words and your keyword appears 10 times, that is a red flag. Increase content depth and value rather than reducing word count to hit a density target.
Aim for 800+ words for substantial pagesTrying to optimize a single page for five different keywords dilutes your focus and confuses search engines about the page topic. One primary keyword and two to three related secondary terms is the proven formula.
1 primary + 2-3 secondary keywords per pageOptimize Your Keywords
These strategies help you get the most SEO value from every keyword placement. All CommonNinja widgets mentioned below are free to start.
Accordions let you add keyword-rich FAQ sections and expandable content blocks that keep pages clean while giving search engines more text to index. Each accordion panel is a natural place for keyword variations.
Try Accordion widget →Tabs allow you to present multiple content sections on a single page without overwhelming visitors. Each tab can target a related keyword or subtopic, expanding your page topical coverage without hurting readability.
Try Tabs widget →Comparison tables naturally repeat product and feature keywords in a structured format that search engines love. They also earn featured snippets and keep visitors engaged longer than plain text.
Try Comparison Tables widget →Content feeds automatically pull in new keyword-relevant content. Fresh content signals to search engines that your page is actively maintained, which can improve crawl frequency and rankings.
Try Feeds widget →Search engines give more weight to keywords that appear early in your content. Make sure your primary keyword shows up naturally within the first paragraph. This also helps readers confirm they have found the right page.
H1, H2, and H3 tags are high-value real estate for keywords. Including your target keyword in at least one subheading signals topical relevance and improves scannability for readers.
Latent Semantic Indexing (LSI) keywords are terms related to your primary keyword. Including them naturally in your content helps search engines understand your page topic more deeply without inflating keyword density.
Revisit published content every quarter. Check if keyword density has drifted due to edits, update keywords based on current search trends, and refresh outdated information. Content decay is one of the most overlooked ranking factors.
SEO Metrics Glossary
Keyword density is just one metric. Here is how it compares to other keyword and content optimization metrics, and when to use each one.
| Metric | Definition | Formula | When to Use |
|---|---|---|---|
| Keyword Density | The percentage of times a specific keyword appears in your content relative to the total word count. The most basic on-page SEO metric for measuring keyword focus. | (Keyword Count / Total Words) x 100 | Checking whether a page is adequately optimized for a target keyword |
| TF-IDF | Term Frequency-Inverse Document Frequency measures how important a word is to a document relative to a collection. It accounts for how common a word is across all documents, not just yours. | TF x log(N / DF) | Advanced content optimization against competing pages |
| Keyword Prominence | Measures where a keyword appears on a page. Keywords in titles, H1 tags, URLs, and the first paragraph have higher prominence than those buried deep in body text. | Positional weighting (qualitative) | Evaluating keyword placement strategy, not just frequency |
| Keyword Proximity | The distance between individual words in a multi-word keyword phrase. Closer proximity means the words appear near each other, signaling a stronger match for the full phrase. | Word distance (qualitative) | Optimizing for multi-word search queries and long-tail keywords |
| Topical Relevance | How well your overall content covers a topic, measured by the presence of related terms, entities, and subtopics. Goes beyond single keywords to assess comprehensive topic coverage. | Semantic analysis (qualitative) | Building topical authority and ranking for competitive queries |
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