Text Entropy Calculator
Quick Tips
- • This tool runs entirely in your browser - your data stays private.
- • Press Ctrl+V (Cmd+V on Mac) to quickly paste text.
- • Use the Copy button to save your result to clipboard.
- • Bookmark this page for quick access!
Calculate the entropy (randomness) of text.
Words
Characters
No Spaces
Sentences
Paragraphs
Lines
Reading Time (200 wpm)
Speaking Time (150 wpm)
Examples
aaaaaaa
Entropy: 0 bits (no randomness)
aB3$xY9!
Entropy: 3+ bits (random)
Frequently Asked Questions
A measure of randomness or unpredictability. Higher entropy = more random/complex.
Natural text: 3-4 bits/char. Random: ~5 bits/char. Compressed: lower.
For password strength analysis, compression optimization, and cryptography.
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