liminfoWord Frequency Counter
Free web tool: Word Frequency Counter
About Word Frequency Counter
The Word Frequency Counter is a free, browser-based text analysis tool that counts how often each word appears in any block of text. Paste or type your content into the textarea and the tool immediately computes three key statistics — total word count, unique word count, and average word length — and then ranks every distinct word from most frequent to least frequent in a sortable table.
Writers, editors, SEO specialists, researchers, and language learners all find word frequency analysis invaluable. Authors use it to spot overused vocabulary and vary their prose. SEO professionals check keyword density to ensure the most important terms appear with the right frequency. Language students analyze native-speaker corpora to learn which words appear most often. Academic researchers run frequency counts on survey responses or interview transcripts to surface dominant themes.
Technically, the tool tokenises the input using a regular expression that captures ASCII letters, digits, and accented Latin characters (Unicode range U+00C0–U+024F), making it suitable for English and many Western European languages. All tokens are lowercased before counting so "Apple" and "apple" are merged. The resulting frequency map is sorted by descending count and displayed up to 50 entries; if the vocabulary exceeds 50 unique words, the table shows how many remain. Because all processing is handled in the browser with React's useMemo hook, results update in real time without any server round-trip.
Key Features
- Instant word frequency ranking — displays up to 50 unique words sorted from most to least frequent
- Live statistics panel showing total word count, unique word count, and average word length in characters
- Percentage column indicating each word's share of the total word count
- Case-insensitive counting — "The" and "the" are treated as the same word
- Support for accented Latin characters (café, naïve, über) alongside standard ASCII
- Real-time updates via React useMemo — results recalculate instantly as you type
- 100% client-side processing — text never leaves your browser or touches any server
- Responsive table with dark mode support for comfortable use in any environment
Frequently Asked Questions
What is word frequency analysis?
Word frequency analysis counts how many times each unique word appears in a piece of text. The result is typically ranked from most frequent to least frequent, giving writers, researchers, and SEO professionals a clear view of which terms dominate a document.
How do I use the Word Frequency Counter?
Paste or type any text into the large textarea. The tool automatically tokenises your input, counts each word, and displays three summary statistics (total words, unique words, average word length) alongside a ranked table of word frequencies. No button click is required — results update in real time.
Does the tool count numbers and hyphenated words?
Numbers and digit sequences are counted as words. Hyphenated compounds like "well-known" are split into two separate tokens because the hyphen is not part of the character class used for tokenisation. Accented characters such as é, ö, and ñ are treated as valid word characters.
Why does the table only show 50 rows?
To keep the results readable, the table displays the top 50 most frequent words. If your text contains more than 50 unique words, a note below the table tells you the total unique word count so you still have the full picture.
Is word frequency the same as keyword density?
They are closely related. Keyword density is the percentage of times a specific keyword appears relative to all words — which is exactly the percentage shown in the fourth column of the results table. Divide the count of your target keyword by the total word count to get its density.
Can I use this to check SEO keyword density?
Yes. Paste your article or webpage text, locate your target keyword in the frequency table, and read the percentage in the rightmost column. SEO best practices generally recommend a keyword density between 1 % and 3 % for the primary keyword.
Is my text sent to a server?
No. All processing happens entirely in your browser using JavaScript. Your text is never transmitted over the network, stored, or shared. This makes the tool safe for sensitive documents.
Which languages does the Word Frequency Counter support?
The tokeniser covers English and most Western European languages that use Latin script, including accented characters in the Unicode range U+00C0–U+024F. East Asian languages such as Korean, Chinese, and Japanese are not segmented because they do not use spaces to delimit words.