Extract the most frequently used letter in text

This tool extracts the most frequently used letter from your text. It provides flexible options so you can extract the most frequent letter overall, extract it while excluding certain letters, extract it while only considering letters matching specified criteria, or display it using a custom format. The analysis is case‑insensitive. Simply enter your text and select the extraction mode that suits your needs.

Input

Most Frequent Letter

Extraction Modes:

Extract Most Frequent Letter (All)
Analyzes all letters (ignoring case) and returns the one that appears most frequently.

Exclude Specified Letters
Ignores the letters you specify (comma‑separated) when determining the most frequent letter.

Include Only Letters Matching Specified Criteria
Considers only the letters that match the specified criteria (comma‑separated). For example, entering "s, t" will only consider letters "s" and "t".

Custom Format Display
Extracts the most frequent letter and displays it using your custom format. Use {letter} as a placeholder for the letter and {count} for its frequency.

Examples:

Extract Most Frequent Letter (All)

Analyzes all letters in the text and returns the one that appears most frequently.

Before:

This is a simple test. Testing is essential.

After:

Exclude Specified Letters

Ignores the specified letters (e.g., A, E, I, O, U) and returns the most frequent letter among the rest.

Before:

A quick brown fox jumps over a lazy dog.

After (excluding A, E, I, O, U):

Include Only Letters Matching Specified Criteria

Only considers letters that match the specified criteria (e.g., "s, t") when determining the most frequent letter.

Before:

Simple tests tend to stress systems.

After (including only "s" and "t"):

Custom Format Display

Displays the most frequent letter using a custom format.

Before:

Hello, hello, how are you?

After (format "Letter: {letter}, Count: {count}"):

Letter: l, Count: 5