Word Frequency Counter
Count how often each word appears in your text and see a sorted frequency list with totals, unique-word counts, and percentages. Useful for keyword density checks, writing analysis, and spotting repeated words.
Whether you call it word frequency counter or keyword density, this free tool handles it instantly in your browser.
Options
Example usage
Example input
the cat sat on the mat the cat ran
Example output
Total words: 9 Unique words: 6 the 3 (33.3%) cat 2 (22.2%) mat 1 (11.1%) on 1 (11.1%) ran 1 (11.1%) sat 1 (11.1%)
Batch Processing
Enter multiple inputs, one per line. Each line will be processed separately.
Why this tool?
Everything runs right in your browser — no uploads, no sign-up, no waiting. Your text never leaves your device.
Quick tips
- •Outputs update live as you type.
- •Use the sticky copy button to grab results quickly.
- •Bookmark this page for fast access.
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How it works
- Paste or type the text you want to analyze.
- Each word is counted and the list is sorted by how often it appears.
- Review totals, unique-word counts, and the percentage share of each word.
Use cases
What word frequencies reveal about writing
Roughly half of everyday English text is built from only about 100 distinct words — the, of, and, to and their kin — a manifestation of Zipf’s law, where a word’s frequency is inversely proportional to its rank. That means the interesting signal in your own frequency list starts below the function words: the first content words to appear high in the ranking are, quite literally, what your text is about.
Editors use this to catch verbal tics (everyone has two or three pet words — "really", "actually", "just" — that repeat far more than intended), and researchers use the same counts for content analysis of interviews and survey responses.
Keyword density: useful metric, outdated tactic
For SEO, the percentages this tool shows are diagnostic rather than a target. Modern search engines penalize keyword stuffing, so the old advice of hitting a specific density is obsolete; what remains useful is the sanity check. If your primary topic never appears in the top content words, the page probably is not really about it. If a single keyword exceeds several percent of all words, it likely reads as spam to humans and algorithms alike. Write naturally, then verify here.
Counting and Utility
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FAQ
How is word frequency calculated?
The tool splits your text into words, counts each one, and sorts them from most to least frequent, showing the count and percentage of the total.
Does it treat capitalized words separately?
By default no — "The" and "the" are counted together. Turn on case sensitive to count different capitalizations separately.
What counts as a word?
Letters and numbers grouped together count as words, including contractions like "don't". Punctuation and spacing are ignored.