Letter Frequency Analyzer

Every language has a characteristic letter distribution. In English, e is by far the most common letter, followed by t, a, o, i and n, while j, q, x and z appear only rarely. Knowing this distribution is the foundation of classical cryptography: substitution ciphers can be broken by matching the most frequent symbols in a coded message to the most frequent letters in the language.

Beyond code-breaking, letter frequency helps writers, designers and educators. Typographers use it to design balanced fonts, game designers use it to weight letter tiles fairly, and teachers use it to illustrate how language works. This analyzer gives you all of that data instantly, with clear percentages you can act on.

For any text you enter, the tool reports the total number of letters, how many distinct letters appear, which letter is the most common, and how many of the 26 letters are unused. Beneath the summary, a ranked bar chart shows every letter's exact count and its share of the total as a percentage.

Only alphabetic characters are counted, and the analysis is case-insensitive, so upper and lower case versions of a letter are combined. Numbers, spaces and punctuation are ignored, giving you a clean picture of pure letter usage.