Character Frequency Counter
Frequency, code points, category breakdown, invisible-character detection, English comparison, and CSV export — live.
About this ToolHow it works, benefits & use casesTap to collapse
This Character Frequency Counter goes well beyond a simple tally. Paste any text and it builds a sortable, searchable table of every distinct character with its count, its share of the total as a percentage, a proportional bar, the Unicode code point (U+xxxx), and a category label — letter, digit, space, punctuation, symbol, control, or other. It is code-point aware, so emoji and accented characters are counted correctly, and it surfaces invisible troublemakers like the zero-width space, non-breaking space, word joiner, and BOM with readable labels instead of nothing at all. Summary cards show total and unique characters, the most common one, and a seven-way category breakdown. Toggle whitespace inclusion and case sensitivity, optionally compare letter frequencies against typical English percentages for classic frequency analysis, and export the full table as CSV. Everything is computed live in your browser — no upload, no limits to worry about for normal text.
How to Use
- 1Type or paste text into the input area, or click "Load example" to see invisible characters detected.
- 2Set the options: include whitespace, treat upper/lower case as distinct, and optionally compare letters to English frequencies.
- 3Review the summary and category cards, then scan the frequency table sorted by count, character, or code point.
- 4Use the Search box to filter rows by character, label, U+ code point, or category.
- 5Export the full breakdown with the CSV copy button or download it as a .csv file.
Key Benefits
- Code-point-aware counting so emoji and accented letters tally correctly
- Detects and labels invisible characters: zero-width space, NBSP, word joiner, BOM, and control codes
- Per-character code point (U+xxxx) and a seven-way category breakdown
- Sort by count, character, or code point and search by character, label, code point, or category
- Toggle whitespace inclusion and case sensitivity to match how you want to count
- Optional comparison against typical English letter frequencies for cryptanalysis-style work
- Export the entire frequency table as CSV by copy or download
Common Use Cases
- Spotting hidden zero-width or non-breaking characters that break parsing or copy-paste
- Classic frequency analysis on a substitution cipher using the English comparison column
- Auditing which Unicode symbols and emoji appear in user-generated content
- Checking the character distribution of generated IDs, tokens, or test data
- Teaching how Unicode categories and code points work with live, labeled output
0 characters counted · 0 unique · live
Options
Δ vs typical letter %
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Yes. The analyzer iterates by Unicode code point rather than UTF-16 code unit, so a multi-byte emoji or an accented letter is counted as one character and shown with its real code point. The category column classifies each as a letter, symbol, and so on.
It can. When the text contains control or zero-width characters, a banner appears and those rows are shown with readable labels — for example (zero-width space), (NBSP), (word joiner), or (BOM) — alongside their U+ code points, so you can locate characters that otherwise show nothing on screen.