Character Frequency Counter — Character frequency analysis counts how often each character appears in a piece of text. It is the first step in classical cryptanalysis (substitution ciphers leave statistical fingerprints), a quick way to detect what language a text is in, and a useful sanity check when generating sample or test data.
Counting happens entirely in your browser.
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Was ist Character Frequency Counter?
Character frequency analysis counts how often each character appears in a piece of text. It is the first step in classical cryptanalysis (substitution ciphers leave statistical fingerprints), a quick way to detect what language a text is in, and a useful sanity check when generating sample or test data.
Paste any text and get a ranked list of every character with its count, sorted from most to least frequent. Toggle case sensitivity and whitespace handling to fine-tune the result.
So funktioniert es
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Paste text
Any length — works for sentences, paragraphs, or large corpora.
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Pick options
Toggle case sensitivity and whether to include whitespace.
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Read the ranked list
The most frequent character is at the top.
Beispiele
English text
In English, "e" is by far the most common letter.
Ergebnis: e 12, t 9, a 8, o 7, i 6, n 6, s 6, h 5, r 5, …
Cryptanalysis hint
A frequency table for ciphertext can crack simple substitution ciphers.
Ergebnis: Most-frequent character matches a likely plaintext "e"
Häufig gestellte Fragen
Verwandte Werkzeuge
Wortzähler
Zählen Sie Wörter, Zeichen, Sätze und Absätze in beliebigem Text. Kostenlos, in Ihrem Browser, ohne Upload.
Character Counter
Count characters, words, lines, and UTF-8 bytes as you type.
Reading Time Calculator
Estimate how long it takes to read or speak a piece of text. Adjustable words-per-minute for fiction, non-fiction, or speech.
Last reviewed: 2026-09-25