Letter Frequency Counter
Count how often each letter A-Z appears in your text. See frequency distribution, percentages, and ranked results instantly.
About This Free Online Letter Frequency Counter
Our free letter frequency counter analyzes your text and shows how often each letter appears, both as a count and as a percentage of the total. Paste your text and the tool tallies every letter instantly, giving you a clear breakdown of the alphabet's distribution. It is widely used in cryptography and codebreaking, where letter frequency is the key to cracking substitution ciphers, as well as in linguistics, word-game strategy, and data analysis. Seeing which letters dominate a passage helps you understand its composition and spot unusual patterns. You can usually choose whether to count case-sensitively and whether to include non-letters. Everything runs locally in your browser as you type, so the analysis is immediate, free, requires no signup, and keeps your text private.
Features of Our Letter Frequency Counter
- Complete A-Z frequency distribution table
- Count and percentage for every letter
- Sorted by frequency — most common first
- Total character count and unique letter count
- Distinguishes but groups uppercase and lowercase
- Real-time analysis as you type or paste
- 100% private — browser-only processing
How to Use the Letter Frequency Counter
The Letter Frequency Counter works right in your browser — no signup, no installation. Follow these steps:
- Type or paste your text into the text area.
- View the frequency table showing each letter, count, and percentage.
- Letters are ranked from most to least frequent for quick insight.
- Use the data for cryptogram solving, language learning, or writing analysis.
Frequently Asked Questions About Letter Frequency Counter
What is letter frequency analysis used for?
Letter frequency analysis is commonly used in cryptography for solving ciphers, in linguistics for studying language patterns, for improving writing style by checking letter diversity, and in forensic document analysis.
What is the most common letter in English?
The letter "E" is the most common in English, appearing in approximately 12-13% of all text. The full frequency order is: E, T, A, O, I, N, S, H, R, D, L, C, U, M, W, F, G, Y, P, B, V, K, J, X, Q, Z.
Does it distinguish between uppercase and lowercase?
Both uppercase and lowercase versions are counted together for each letter. So "A" and "a" are combined into a single count for the letter A. This gives you the total occurrence of each letter regardless of case.
Why Choose the Letter Frequency Counter?
Accurate counting is only useful if it is instant and trustworthy. The Letter Frequency Counter updates as you type and runs entirely in your browser, so even long documents are measured in real time and your text is never uploaded, logged, or shared.