Word Counter & Keyword Density Analyzer
Count words, characters, sentences, and paragraphs as you type, get reading and speaking time estimates, and see your top keywords by frequency and density for SEO.
Interactive Client Prototype Sandbox
Top Word Frequencies & Search Density (>3 chars)
Disclaimer: This free tool is provided “as is,” without warranties of any kind, and is for general informational purposes only — not professional, legal, financial, medical, tax, or engineering advice. Results may contain errors; verify anything important independently and use at your own risk. We accept no liability for any loss or damage arising from its use. See our Terms of Use for details.
Step-by-Step Guide
Paste or type your text in the input area. All statistics update live as you type — no button to click. The top section shows word count, character count (with and without spaces), sentence count, and paragraph count. Below that, reading time and speaking time are shown in minutes and seconds. The keyword section shows your top five most-used words, their occurrence count, and their density (percentage of total words).
How stop words are handled
The keyword list automatically filters out common stop words — words like 'the', 'a', 'and', 'is', 'in', 'of' — that appear frequently in all English text and are not meaningful for keyword analysis. Only content words (nouns, verbs, adjectives) are ranked, giving you a meaningful picture of what your text is actually about rather than a list of grammar particles.
Using this for SEO
Search engines evaluate keyword density as one signal of what a page is about. Ideal keyword density for a target phrase is typically 1–3% — enough to establish the topic without appearing as keyword stuffing. Use the keyword list to check that your primary topic keyword appears consistently and that no unintended word dominates the frequency ranking.
Paste a 500-word draft article about 'compound interest': word count 500, character count ~2,900, reading time ~2m 30s (at 200 wpm), speaking time ~3m 50s (at 130 wpm). Top keywords might be: 'interest' (12 occurrences, 2.4%), 'compound' (9, 1.8%), 'rate' (7, 1.4%), 'savings' (6, 1.2%), 'year' (5, 1.0%) — showing that the primary topic keyword appears at a healthy density.
Who it's for
SEO specialists, content copywriters, journalists, and blogging administrators.
Core Features
- Live word, character, sentence, and paragraph counts.
- Estimated reading time (~200 wpm) and speaking time (~130 wpm).
- Top-five keyword frequencies with their density percentage.
- Runs entirely in your browser — your writing never leaves your device.
🛡️ No tracking — your inputs, keys, and details never leave this client sandbox.
How is reading time calculated?
Reading time is your word count divided by about 200 words per minute, a common average for silent adult reading. Speaking time uses roughly 130 words per minute, closer to a comfortable presentation pace. Both are estimates — your actual speed varies with the material.
What counts as a word?
A word is any run of characters separated by spaces or line breaks, so hyphenated terms like "well-known" count as one. Characters count every keystroke including spaces; sentences and paragraphs are split on end punctuation and blank lines.
What is keyword density and why does it matter?
Keyword density is how often a word appears as a percentage of your total word count. The tool lists your top words by frequency and density so you can see what your text emphasizes — useful for SEO, where you want your main topic present but not stuffed.
Is my text private?
Yes. The counter runs entirely in your browser — nothing you type or paste is uploaded or stored on a server. You can confirm it by going offline; it keeps working.
Is there a word limit?
No fixed limit. It counts as you type and handles long drafts, though extremely large pastes depend on your device's memory since all the work happens locally.
How does the tool count sentences?
Sentences are counted by splitting on end punctuation — periods, exclamation marks, and question marks — with some heuristics to avoid splitting on abbreviations like 'Dr.', 'e.g.', and decimal numbers. It is an approximation: edge cases like ellipses (...) and dialogue punctuation may not split exactly as expected. For most prose the count is accurate within one or two sentences.
What is a good keyword density for SEO?
Most SEO practitioners recommend keeping the primary keyword density between 1% and 3% of total words. Below 1% and the page may not signal strong topical relevance for that term. Above 3–4% risks being flagged as keyword stuffing by search engine algorithms, which can reduce rankings. More important than density is the use of the keyword in semantically significant positions: the title, the first paragraph, at least one heading, and the concluding paragraph.
Word counters and SEO auditors solve the same problem differently
A basic word counter and a keyword density checker look similar on the surface — they both process text and produce numbers about it. But they are answering different questions. A word counter asks: 'how much text is here?' A keyword density checker asks: 'what is this text about, and how strongly does it signal that topic?' Understanding the difference explains why a word count alone is a poor SEO metric, and why keyword density alone is a poor writing metric. The most useful text analysis tools report both, in context.
How computers count words
The most common definition of a word for counting purposes is any sequence of non-whitespace characters surrounded by spaces, tabs, or line breaks. This means 'well-known' counts as one word, a hyphenated compound. Numbers like '42' and '3.14' each count as one word. Punctuation attached to a word (like a trailing comma or period) is stripped before counting, so 'word,' and 'word' are the same. Blank lines are typically not counted as words.
Reading time estimation
Reading time is calculated by dividing the word count by an assumed reading speed. The commonly cited average adult silent reading speed is 200–250 words per minute, though research shows significant variation: slow readers may average 150 wpm, while rapid readers can exceed 400 wpm. The 200 wpm convention produces a useful estimate for most audiences. Speaking time is generally slower — professional presenters and audiobook narrators typically speak at 125–150 words per minute for comprehension; conversational speech is faster (160–180 wpm) but less suitable for prepared content delivery.
Keyword density and SEO
Keyword density is the percentage of words in a piece of text that are a specific target keyword or phrase. The formula is: density = (keyword_count ÷ total_words) × 100. In the early days of search engine optimization (pre-2012), high keyword density was a reliable ranking signal and led to the practice of 'keyword stuffing' — repeating a target phrase unnaturally often. Google's Penguin algorithm update (2012) and subsequent Helpful Content updates penalize keyword stuffing and instead reward pages that cover a topic comprehensively with natural language. Modern SEO focuses on topical coverage and semantic relevance rather than raw keyword frequency. The sweet spot is a primary keyword at 1–3% density, appearing naturally in the title, opening paragraph, at least one subheading, and the conclusion — not mechanically distributed every N words.