Free Online Character Frequency Counter Tool (Case-Insensitive)

The Character Frequency Counter analyzes your text and counts how many times each character appears, ignoring case differences — treating uppercase and lowercase letters as the same character. It includes letters, numbers, spaces, punctuation, and symbols in its results. Perfect for writers, coders, cryptographers, and data analysts who need quick and accurate frequency analysis. This tool runs fully in your browser for instant, private analysis — no data leaves your device.

Example:

Input: Hello HELLO
Output:
h — 2
e — 2
l — 4
o — 2