Keyword Density Checker — Free SEO Content Analysis Tool

Also See: ↑ Word Counter For SEO Reading Time URL Slug Generator

How to Use This Tool

Paste your article or page content into the checker. The keyword frequency table shows your top keywords, how many times each appears, and density percentage. Check that your target keyword appears in the 1–2% density range.

Why Use This Tool

Paste your full page or article content
View top keywords sorted by frequency
Check density % for each keyword
Identify over-optimized terms (>3%) or missing keywords

What You Get

✓Top 20 keyword frequency table

✓Density percentage per keyword

✓Stop word filtering

✓Target keyword highlight

✓Total word count display

✓Real-time analysis

Keyword Density Checker — Free SEO Content Analysis Tool Free · No sign-up

Paste Your Content

Highlight keyword:

Common Use Cases

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On-page SEO optimization

Verify your target keyword appears in the 1–2% density range — enough to signal relevance without triggering Google's over-optimization filters.

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Competitive content analysis

Check competitor content to see which keywords they emphasize. Copy their content and analyze it to inform your own keyword strategy.

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Content audit

Paste existing pages to find keyword stuffing (>3% density) or missed optimization opportunities — then revise before a Google algorithm update hits.

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AI content review

AI-generated content often has uneven keyword distribution. Check and adjust density before publishing.

What is the ideal keyword density for SEO?

The ideal keyword density is 1–2% for your primary keyword. Appearing 10–20 times per 1,000 words signals relevance without appearing spammy. Above 3% risks triggering Google's over-optimization filters.

How do I calculate keyword density?

Keyword density = (keyword count ÷ total word count) × 100. For example, if 'password generator' appears 15 times in a 1,000-word article, density = 15 ÷ 1,000 × 100 = 1.5%.

Should I worry about keyword density in 2025?

Keyword density is a secondary signal — Google primarily evaluates topical completeness and content quality. However, very high density (>5%) is a clear spam signal, and very low density may indicate weak relevance. Aim for natural usage in the 1–2% range.

Keyword Density Analysis: What the Numbers Mean

✓ Under 0.5%: Possibly under-optimized

Your target keyword may not appear enough times to clearly signal the topic. Try naturally incorporating it in headings, intro, and conclusion.

✓ 1–2%: Ideal range

This is the sweet spot — clearly signals relevance to Google without appearing manipulative. Most well-ranking pages fall in this range.

✓ 2–3%: Borderline

Acceptable but monitor. If multiple related keywords are also in this range, the combined density may attract scrutiny.

✓ Above 3%: Over-optimization risk

Reduce usage. Replace some instances with synonyms, LSI keywords, or rephrase sentences to reduce density while maintaining topical relevance.

Frequently Asked Questions

Does keyword density directly affect Google rankings?+

Not as a direct ranking factor. Google's algorithms are semantic — they understand topic relevance from context, not just keyword repetition. However, very high density (>5%) is a clear spam signal that can trigger penalties.

Should I include my keyword in headings?+

Yes. Including your target keyword in H1, H2, and H3 headings is more impactful than increasing body text density. Headings carry more weight in Google's content evaluation.

What are stop words?+

Stop words are common words filtered out of keyword analysis: the, a, an, and, or, but, in, on, at, etc. Toolzoid filters these automatically to show only meaningful keywords.

How do I improve keyword density without keyword stuffing?+

Use the keyword naturally in: the first 100 words, at least one H2 heading, the image alt text, the meta description, and the conclusion. Add related terms (LSI keywords) throughout.

Why Use Toolzoid?

Toolzoid provides fast, privacy-first online tools that run entirely in your browser. No uploads, no tracking, no login required. Our word counter includes keyword density analysis as a built-in feature — the same engine that powers this dedicated checker. Use them together for complete SEO content analysis.

Also useful: Word Counter · Word Counter for SEO · Reading Time Calculator · All Writing Tools

Keyword Density Checker Online