How to Calculate Keyword Density
Calculate keyword density using this formula: (Number of keyword appearances / Total word count) × 100. For example, a keyword appearing 10 times in a 500-word article has a density of 2%.
Quick Answer
Keyword Density = (Keyword Count / Total Words) × 100. If your keyword appears 15 times in 1,000 words: (15 / 1,000) × 100 = 1.5% density.
Explanation
The keyword density formula is straightforward: divide keyword occurrences by total word count, then multiply by 100 to get a percentage. This works for single words or phrases.
For phrase keywords like 'keyword density checker,' count each complete phrase appearance. The phrase 'keyword density' alone doesn't count as a match for the three-word phrase.
Manual calculation works for quick checks, but tools are more accurate for long content. They handle counting consistently, identify variations, and catch keyword mentions you might miss.
When calculating density, decide whether to count variations. 'Keyword,' 'keywords,' and 'keyword's' can be counted separately or together depending on your analysis goals.
Examples
| Content Type | Recommendation |
|---|---|
| Formula | (Keyword Count / Total Words) × 100 |
| 10 keywords in 500 words | (10/500) × 100 = 2% |
| 15 keywords in 1,000 words | (15/1000) × 100 = 1.5% |
| 20 keywords in 2,000 words | (20/2000) × 100 = 1% |
| 5 keywords in 300 words | (5/300) × 100 = 1.67% |
| Target range | Calculate to reach 1-2% |
Best Practices
Use a keyword density tool for accurate, consistent calculations.
Calculate density for your primary keyword and top secondary keywords.
Check density after writing, not during—focus on quality first.
Compare your density to top-ranking competitor content as a benchmark.
Check Your Content with Our Tools
Use these free SEO tools to analyze keyword density, count keyword occurrences, and optimize your content for search engines.
Frequently Asked Questions
Should I count keyword variations together?
It depends on your analysis goals. For primary keyword tracking, count exact matches only. For overall topic coverage analysis, counting variations together can be helpful.
How do tools count multi-word keywords?
Keyword density tools count each complete phrase occurrence. 'Best keyword density' appearing twice counts as 2 for that exact phrase, regardless of how many times 'keyword' appears alone.
What's the fastest way to check keyword density?
Use the BullSwift Keyword Density Checker. Paste your content, and the tool instantly calculates density for all words and phrases, ranked by frequency.