Free Online Letter Frequency Counter

The Letter Frequency Counter analyzes your text to determine how often each letter of the alphabet appears. This analysis is presented in both a detailed table and a visual bar chart, making it easy to understand the distribution of letters in your content.

Letter frequency analysis has many applications. In linguistics, it helps study language patterns and characteristics. In cryptography, understanding letter frequency is fundamental to breaking substitution ciphers. In education, it's a useful tool for teaching about language statistics and data visualization.

Our tool counts every alphabetic character in your text and calculates both the raw count and percentage for each letter. Results can be sorted alphabetically or by frequency (most to least common), allowing you to quickly identify the dominant and rarest letters in your text.

The visual bar chart provides an intuitive representation of the frequency distribution. Longer bars indicate more frequent letters, making patterns immediately visible. In English text, you'll typically see 'E', 'T', 'A', 'O', 'I', and 'N' as the most frequent letters.

The tool is case-insensitive, treating uppercase and lowercase as the same letter. Non-alphabetic characters (numbers, punctuation, spaces) are excluded from the analysis but don't affect the accuracy of letter counting.