Keyword Density Checker - Free Online Keyword Analysis Tool

How to Use the Keyword Density Checker

1. Paste or type your content — enter your article, blog post, or web page text in the text area
2. View instant analysis — the tool immediately shows total word count, character count, and keyword frequency table
3. Explore n-grams — switch to the 2-gram tab to see two-word phrase frequencies, or 3-gram for three-word phrases
4. Review density percentages — each keyword shows what percentage of total words it represents
5. Check stop words — common English stop words are automatically filtered for cleaner results

Perfect for SEO writers, content editors, and bloggers optimizing for search.

Features

• Keyword frequency table — sorted by density percentage (highest first)
• Word & character count — total content stats at a glance
• 2-gram & 3-gram analysis — common phrase detection for better content insights
• Stop word filtering — ignores common English stop words (the, and, is, etc.)
• Real-time — updates as you type or paste
• No data sent — everything runs locally in your browser

Use Cases

• SEO content optimization: Check that your target keyword appears at the right frequency — not too sparse to rank, not so dense it looks like keyword stuffing
• Competitor analysis: Paste a competitor’s page content to see which keywords they’re targeting
• Blog writing: Monitor keyword density as you write to maintain natural, readable content
• Product descriptions: Ensure consistent keyword usage across hundreds of product pages
• Guest posts: When writing for other sites, check your keyword density to match their editorial guidelines

FAQ

What is the ideal keyword density?

There’s no fixed ideal percentage, but most SEO experts recommend 1-3% for your primary keyword. Focus on writing naturally for readers — if your content sounds forced, you’re probably over-optimizing.

What are n-grams?

N-grams are contiguous sequences of n words. 2-grams (bigrams) show two-word phrases like “content marketing” or “SEO tools.” 3-grams (trigrams) show three-word phrases. Analyzing n-grams helps you understand the topical phrases in your content.

Does keyword density still matter for SEO?

Keyword density is less important than it was a decade ago, but it’s still a useful diagnostic. Modern SEO focuses on topical relevance and semantic search. Use the density checker as one signal among many, not as a strict target.

Why are stop words filtered?

Stop words (the, and, is, in, etc.) are so common they’d dominate the frequency table and hide meaningful keywords. Filtering them gives you a clear view of your actual content keywords.

Tips

• Write your content first, then check density — don’t let optimization hurt readability
• Use the 2-gram and 3-gram views to discover unintentional keyword patterns
• Compare density across multiple pages to ensure you’re not competing with yourself for the same keywords