Character Frequency Counter

It analyzes your text and counts how many times each character appears. Results are displayed in a sortable table with counts, percentages, and a visual bar chart for quick comparison.

Yes. By default the analysis is case-insensitive, merging uppercase and lowercase letters. Toggle the case-sensitive option to count uppercase and lowercase characters separately.

You can include or exclude whitespace characters (spaces, tabs, newlines) and punctuation marks. This lets you focus on letter frequency alone or include all characters in your analysis.

Yes! All processing happens entirely in your browser. Your text is never sent to any server. No data is collected, stored, or transmitted.

Character frequency analysis is used in cryptography, linguistics, text compression research, and writing analysis. It helps identify patterns in text, verify language characteristics, and support cipher-breaking exercises.