Keyword Density: The Math + The Reality
Keyword density is calculated as (keyword occurrences / total words) x 100, expressed as a percentage. If "marketing" appears 15 times in a 1,000-word draft, density is 1.5%. Density is a diagnostic indicator, not a ranking formula. It still matters because repetition is one of the fastest ways to spot copy that sounds forced, thin, or narrowly optimized.
- Very high density can point to keyword stuffing or repetitive phrasing.
- Unexpected top words can reveal that the draft is about a different topic than intended.
- Repeated product or location terms can make service pages sound unnatural.
- Before-and-after checks help verify that a rewrite actually reduced repetition.
- Manual competitor review is easier when you compare visible term emphasis across drafts.
How to Interpret Density
| Content type | What to watch | Notes |
|---|
| Blog post | Topic words should appear naturally, not in every sentence. | Add examples and subtopics instead of repeating the same phrase. |
| Product page | Product names may be high, but modifiers should vary. | Use specifications, benefits, use cases, and comparison language. |
| Service page | Service and location terms can become repetitive. | Mention process, eligibility, pricing factors, and FAQs. |
| Category page | Repeated category terms are common in navigation copy. | Review visible body copy separately from product names. |
| AI-assisted draft | Watch for repeated transition words and generic adjectives. | Rewrite with first-hand details and specific examples. |
What This Checker Counts
The current checker extracts words from pasted text, lowercases them, ignores words of three characters or fewer, and returns the 10 most frequent remaining words. It does not fetch URLs, export CSV, generate a word cloud, or calculate phrase-level bigrams and trigrams. For phrase repetition, paste the exact phrase into your editor search or compare sections manually after the single-word scan.
Density vs Semantic Coverage
A density report is only a starting point. Strong SEO content answers the query, covers the important entities and subtopics, uses original examples, and explains the decision points a user came to solve. If a page repeats one keyword but misses pricing, steps, caveats, examples, or comparisons, lowering density alone will not make it useful.
Practical Content Workflow
- Write naturally first. Don't check density mid-draft — write for the reader.
- Audit with this tool. Check which words dominate the draft.
- If one word is too high: replace duplicates with clearer variants, pronouns, examples, or related subtopics.
- If your intended topic is absent: review the title, introduction, headings, and conclusion for clarity.
- Compare manually: paste competing drafts or page sections one at a time and note how their top words differ.
- Rewrite for usefulness: add specific examples, edge cases, and answers rather than trying to hit a fixed percentage.
Short Words and Stop Words
This tool filters out words shorter than four characters. That removes many common words such as "the," "and," and "to," but it is not a full linguistic stop-word system. Some common longer words can still appear in the results, so use editorial judgment when deciding what to rewrite.
