Character Frequency

Analyze how often each character appears in your text

Input Text

Options

85

Total Chars

28

Unique Chars

'⎵' (16×)

Top Char

Frequency Chart (28 chars)

⎵
1618.8%
o
78.2%
e
55.9%
u
44.7%
i
44.7%
t
33.5%
h
33.5%
r
33.5%
q
22.4%
c
22.4%
k
22.4%
b
22.4%
w
22.4%
n
22.4%
f
22.4%
x
22.4%
j
22.4%
m
22.4%
p
22.4%
s
22.4%
v
22.4%
l
22.4%
a
22.4%
z
22.4%
y
22.4%
d
22.4%
g
22.4%
.
22.4%

About the Character Frequency Analyser

This character frequency analyser counts every character in a text and shows counts, percentages and a bar chart. It is the standard first step in breaking a substitution cipher and a quick way to spot unexpected characters in data.

Character frequency analysis counts occurrences of each individual character rather than each word. In English, E is the most common letter at around 12%, followed by T, A, O, I and N — a distribution stable enough across any long text to be useful.

That stability is what breaks simple substitution ciphers. Because such ciphers replace letters consistently, the frequency pattern survives encryption: the most common symbol in the ciphertext is very likely E, and the shape of the whole distribution guides the rest.

It is also useful for data inspection. An unexpected count of tabs, non-breaking spaces or control characters in a supposedly clean file explains a lot of otherwise mysterious parsing failures.

How to use the Character Frequency Analyser

  1. Paste your text. Enter the text or ciphertext to analyse.
  2. Read the counts. See each character with its count and percentage.
  3. Compare to English. Match the distribution against the usual E, T, A, O, I, N ordering.
  4. Look for oddities. Check for unexpected tabs, control characters or invisible spaces.

Character Frequency Analyser features

  • Detailed statistics
  • Case sensitivity options
  • Character filtering
  • Percentage analysis
  • Export results
  • Real-time counting

Frequently asked questions

How does character frequency work?

Analyzes your text and counts how many times each character appears, including letters, numbers, and symbols.

Can I ignore spaces and punctuation?

Yes! Choose to include or exclude spaces, punctuation, and case sensitivity in your analysis.

What statistics are shown?

Shows character count, percentage, and sorted frequency for comprehensive text analysis.