Measure the Shannon entropy of any string — how many bits of information each character actually carries. The meter compares observed entropy against the ceiling for the alphabet used, and the histogram shows exactly which characters are dragging it down.
Shannon Entropy
3.495bits / char
Moderate (natural language)
Using 94.4% of the entropy its own alphabet allows.
Length
28
characters
Unique
13
distinct chars
Total Entropy
97.9
bits observed
Search Space
133.1
bits, pool of 27
Character Classes
Lowercase
+26 to pool
Uppercase
absent
Digits
absent
Symbols
absent
Space
+1 to pool
Other
absent
Character Frequency (13 distinct, most common first)
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