Keyword Density Analyzer: Counting Word Frequency for SEO
Keyword density measures how often a particular word or phrase appears in a piece of content, expressed as a percentage of total words. SEO writers use it to make sure target keywords appear enough — but not so much that the writing feels stuffed.
Density = (occurrences of keyword / total words) × 100. A 1,000-word article that mentions 'tax calculator' 10 times has 1% keyword density for that phrase.
Older SEO advice prescribed specific density targets (often 1–3%). Modern Google ranks based on semantic understanding, not raw counts — but density still matters as a sanity check. Below 0.5% suggests the keyword may be underrepresented; above 4% looks like keyword stuffing.
How to use density in modern SEO
- •Pick one primary keyword per page; aim for 0.5–2% density
- •Use 5–10 related secondary keywords naturally — Google rewards topic depth, not keyword repetition
- •Vary phrasing — 'tax calculator', 'calculate tax', 'tax calculation tool' — to feel natural
- •Read the result aloud — if you stumble over repetition, the density is too high
Extended FAQ
Is there a magic density number?
No. Modern Google looks at topical relevance, user signals, and semantic context. Density is just one signal among many. Write naturally; the density usually lands in the right range.
Does it count exact-match phrases or any word?
Both — single-word density and multi-word phrase density. Use both views: high single-word density on common words ('the', 'a') is normal; high phrase density on your target keyword is where SEO attention belongs.
Are my pasted texts stored?
No — runs entirely in your browser.