Entropy Calculator

Calculate Shannon entropy and randomness metrics

Input Text
0 characters | 0 unique
Shannon Entropy

0.0000

bits per character

Very Low

Highly predictable, repetitive patterns

Additional Metrics

Max Possible Entropy

0.0000

Efficiency

0.0%

Total Bits

0

Unique Characters

0

Shannon Entropy measures the average information content per character. Higher entropy indicates more randomness and unpredictability. For security applications (passwords, keys), aim for entropy above 4 bits/char.