Keyword Density Checker

Check keyword density in your content. See keyword count, density percentage, and top frequent words. Free SEO content analyzer.

Last updated: June 1, 2026

Content

Target Keyword

What is Keyword Density Checker?

A keyword density checker analyzes your content and calculates how frequently specific words and phrases appear relative to the total word count. Keyword density = (keyword count / total words) × 100. Search engines use content analysis to understand page topics — too low a density and your page may not rank for target terms, too high and you risk triggering keyword stuffing penalties. The ideal range is typically 1-3% for primary keywords and 0.5-1.5% for secondary terms. This tool gives you the data to optimize without over-optimizing.

How It Works

Paste your content and the tool performs frequency analysis. It counts total words, identifies the most common single words (1-grams), two-word phrases (2-grams), and three-word phrases (3-grams), and calculates density percentages for each. Stop words (the, a, is, and, etc.) are filtered from analysis since they don't signal topic relevance. You can also check the density of specific target keywords. Results are sorted by frequency with density percentages, giving you a clear picture of your content's keyword distribution.

Common Use Cases

•Optimizing blog post keyword density before publishing to maximize search relevance
•Checking for accidental keyword stuffing that could trigger search engine penalties
•Analyzing competitor content to understand their keyword strategy and density targets
•Verifying that target keywords appear naturally throughout the content at appropriate frequency
•Identifying overused filler words that could be replaced with more relevant terminology
•Balancing keyword distribution across headings, body text, and meta content for SEO