Keyword Density Checker — Unigrams, Bigrams & Trigrams
Paste any text and instantly analyze keyword frequency and density percentages — for single keywords, two-word bigrams, or three-word trigrams. Toggle a built-in stop word filter to focus on meaningful content keywords. All processing is 100% client-side.
Keyword Density Analyzer
Paste your content and analyze keyword frequency & density.
Density Analysis
See keyword frequency and percentage density at a glance.
N-gram Support
Analyze single words, 2-word, or 3-word phrases.
Private
All analysis runs in your browser. Nothing is sent anywhere.
Included Keyword Analysis Tools
Keyword Frequency Analyzer
See every keyword ranked by count and density % with a relative bar chart for instant visual comparison.
N-gram Mode Selector
Switch between single keywords (unigrams), 2-word phrases (bigrams), and 3-word phrases (trigrams) with one click.
Stop Word Filter
Toggle a built-in 100+ English stop word list to hide filler words and focus on meaningful content keywords.
Text Statistics
Instant totals for word count, unique word count, character count, and sentence count alongside the keyword table.
How to Check Keyword Density
Paste your content
Drop your article, blog post, or any text into the input area. Word, character, and sentence counts update immediately.
Choose N-gram mode
Select 1 for single keywords, 2 for two-word phrases, or 3 for three-word phrases depending on what you want to analyze.
Filter stop words
Toggle 'Include stop words' off to remove common filler words and focus on your content's meaningful keywords.
Review density results
Read the ranked keyword table showing count and density %. Aim for a natural spread — over-stuffing a term above 3–4% can flag thin content.
Frequently Asked Questions
- What is keyword density and why does it matter for SEO?
- Keyword density is the percentage of times a keyword appears relative to the total word count. While Google no longer uses a strict density formula, analyzing density helps you spot over-optimized (keyword-stuffed) content and ensure your primary topic is reflected naturally throughout the text.
- What is the ideal keyword density?
- There is no fixed ideal, but a natural-sounding article typically keeps any single keyword below 2–3% density. If a term appears at 5%+ it may feel repetitive to readers and could be flagged as over-optimization by search engines.
- What are bigrams and trigrams?
- A bigram is a two-word phrase (e.g. 'keyword density'), and a trigram is a three-word phrase (e.g. 'keyword density checker'). Analyzing these reveals which multi-word topics dominate your content — important for long-tail SEO.
- What are stop words?
- Stop words are common English words like 'the', 'is', 'and', 'of' that carry little semantic meaning. Filtering them out reveals the substantive keywords in your text. Toggle the stop word filter off if you want to see them included.
- Is my content sent to a server?
- No. All keyword analysis runs in your browser. Your text never leaves your device.