Word Frequency Analyzer
Analyse word and letter frequency in any text. See which words dominate with visual bar charts.
What is Word Frequency Analyzer?
A word frequency analyser counts how often each word and letter appears in a piece of text and displays the results as sortable tables and visual bar charts. It is a foundational tool for text analysis, computational linguistics, content auditing, and language learning.
Understanding word frequency has many practical uses. Content writers and SEO analysts use it to check whether their key terms appear with the right density in an article. Educators use it to identify vocabulary in student writing. Researchers use it to compare language patterns across texts or to preprocess text for natural language processing tasks. Cryptographers and puzzle solvers use letter frequency analysis to help crack substitution ciphers, since each language has characteristic letter distribution patterns.
The tool separates word frequency from letter (character) frequency, giving you two complementary views of your text. The word frequency table shows each unique word, its count, and its percentage of total words. The letter frequency table does the same for individual characters, helping you see the distribution of vowels, consonants, and punctuation.
All results are shown in interactive bar charts that make it easy to spot the most common and least common items at a glance. You can filter out stop words to focus on content words, toggle case sensitivity, and sort by frequency or alphabetically. Like all tools on this platform, everything runs locally in your browser.
How to Use Word Frequency Analyzer
- Paste your text
Enter any text you want to analyse. You can paste articles, essays, code, emails, or any written content.
- Set analysis options
Choose whether to ignore case, filter stop words, and whether to include or exclude punctuation from the count.
- View frequency charts
See interactive bar charts for the top words and letters, along with full sortable frequency tables.
- Sort and filter results
Sort by frequency or alphabetically, and filter the table to find specific words or explore the tail of the distribution.
Key Benefits
Frequency data is displayed as interactive charts, making patterns immediately visible at a glance.
Get two complementary views: word-level frequency for content analysis and character-level frequency for linguistic study.
Remove common function words to focus the analysis on meaningful content terms.
All analysis runs locally — no text is uploaded or stored anywhere.
Frequently Asked Questions
It is used for SEO keyword density checks, readability research, vocabulary analysis in education, cipher-breaking in cryptography, and preprocessing text for machine learning.
With case sensitivity on, "The" and "the" are counted as different words. With it off (the default), all variants of a word are merged into a single lowercase entry.
Stop words are common words like "the", "a", "is", "and" that appear in almost every text. Filtering them out lets you focus the frequency analysis on the distinctive content words in your text.
There is no hard limit. The tool processes text of any length in the browser. Very large texts (hundreds of thousands of words) may take a second or two to analyse.