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Character Frequency Analyzer
Analyze character frequency distribution in any text. Count total characters, non-space characters, words, and lines. View the top 50 most frequent characters with their counts and percentages. Perfect for text analysis, cryptography, and data cleaning.
Live analysis of whatever is in the box: total characters, non-space characters, words and lines, plus a table of the 50 most frequent non-whitespace characters with counts and a percentage of the non-space total. It recalculates on every keystroke, so there is no button to press and nothing typed here is stored.
How to use it
- Paste or type the text into the box.
- Watch the four statistic cards update as you type.
- Read the table to see which characters dominate once whitespace is excluded.
Worked example
mississippibecomesTotal 11 | Non-space 11 | Words 1 | Lines 1
i 4 36.36%
s 4 36.36%
p 2 18.18%
m 1 9.09%Rendered as four cards and a three-column table; percentages are of the 11 non-space characters.
hello worldbecomesTotal 11 | Non-space 10 | Words 2 | Lines 1
l 3 30.00%
o 2 20.00%
h 1 10.00%
e 1 10.00%
w 1 10.00%
r 1 10.00%
d 1 10.00%The space counts in the total but never appears in the table.
When to use it
- Checking the letter distribution of a ciphertext before working a frequency analysis by hand.
- Finding stray characters in data that should hold only ASCII letters or digits.
- Confirming which letter dominates a block of text when testing a substitution.
- Getting a non-space character count after a form rejected the value as too long.
What it does not do
- Only 50 distinct characters are listed; on a long document the rest are dropped with no indication that the table was cut.
- Percentages are of the non-space count, so their denominators are smaller than the total character figure shown above them.
- Whitespace never appears in the table, so trailing tabs or double spaces cannot be found with this tool.
- It gives fixed character counts only. There are no bigrams, no word frequencies and no index of coincidence, so it starts cipher work rather than finishing it.
- The line count is a split on newline, so a single line with no trailing break reads as 1 and an empty box also reads as 1.