BYTETOOLS

Letter Frequency Counter

Count how often each letter appears in your text, with percentage bars sorted by frequency. Great for cryptograms, ciphers, Wordle and language analysis.

What is the Letter Frequency Counter?

The Letter Frequency Counter tallies how many times each letter appears in your text and displays the result as a sorted table with percentage bars.

  • Counts each letter with totals and percentages
  • Sorted by frequency or alphabetically
  • Optional all-characters mode including digits and punctuation
  • Visual percentage bars for quick reading
  • CSV export of the full table
  • Live, in-browser and fully private

How to use the Letter Frequency Counter

  1. 1

    Paste or type your text into the input box.

  2. 2

    Choose whether to count letters only or every character.

  3. 3

    Read the sorted frequency table with counts and percentage bars.

  4. 4

    Copy the table as CSV for use in a spreadsheet.

About the Letter Frequency Counter

The Letter Frequency Counter tallies how many times each letter appears in your text and displays the result as a sorted table with percentage bars. Switch between counting letters only (A–Z, case-insensitive) and counting every character including digits, punctuation and spaces.

Letter frequency is the foundation of classical cryptanalysis — in typical English text, E, T, A and O dominate, which is exactly how substitution ciphers and cryptograms get cracked. The same view is useful for Wordle-style letter strategy, linguistics homework, typing-practice analysis and spotting unusual patterns in generated text.

The analysis runs 100% locally in your browser, updating live as you type or paste. Nothing is sent to a server, and the tool works offline.

Frequently asked questions

What is the most common letter in English?

E, by a clear margin — around 12–13% of letters in typical English text — followed by T, A, O, I and N. Comparing your text's distribution against that pattern is how substitution ciphers are broken.

Does the counter treat uppercase and lowercase as the same letter?

In letters-only mode, yes: A and a are combined into one count. In all-characters mode you can see every distinct character, case included, counted separately.

Can I use this to solve a cryptogram?

Yes. Paste the cipher text, look at which symbols are most frequent, and map them against typical English frequencies (E, T, A, O…) as a starting point for substitutions.

Can it count spaces, digits and punctuation too?

Switch to the “All characters” mode and every character — digits, punctuation, spaces and symbols — is counted and listed alongside the letters.

Is my text analysed on a server?

No. Counting happens instantly in your browser as you type, and nothing you paste ever leaves your device.

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