Free Online Keyword Density Checker

Keyword density is a fundamental SEO metric that measures how often a specific keyword appears in your content relative to the total word count. Our free online keyword density checker gives you a comprehensive analysis of every keyword in your text, including frequency counts, density percentages, and visual indicators for optimal versus over-stuffed keywords.

Search engines like Google use keyword density as one of many signals to understand what your content is about. If your target keyword appears too few times, search engines may not recognize it as the primary topic. If it appears too many times (keyword stuffing), Google may penalize your page. The sweet spot is typically between 1% and 3% density for your primary keyword.

Our tool automatically filters out common stop words (like 'the', 'is', 'at', 'and') to give you meaningful keyword data. It ranks all keywords by frequency so you can quickly see which terms dominate your content. Each keyword is color-coded: green for optimal density (1-3%), red for over-optimized (above 3%), and neutral for low-frequency terms.

Professional SEO writers use keyword density analysis as part of their content optimization workflow. After writing a draft, they paste it into a keyword density checker to verify their target keyword hits the right density, check for unintentional keyword stuffing, and discover related terms they might want to include.

The visual bar chart next to each keyword makes it easy to compare relative frequencies at a glance. This is especially useful for identifying keyword cannibalization — when similar terms compete for prominence in your content.

For best SEO results, aim for 1-3% density on your primary keyword, 0.5-1% on secondary keywords, and use synonyms and related terms naturally throughout your content. Our tool makes this analysis fast, free, and simple.