Audit Password Strength & Shannon Entropy
Analyze password security with exact Shannon entropy bits, GPU cluster crack time estimates, and character diversity audits.
About This Tool
Password Strength & Entropy Analyzer evaluates passwords using mathematical Shannon entropy formulas, auditing character pool diversity (uppercase, lowercase, numbers, symbols) and estimating brute-force resistance against 100-Billion-hash/sec GPU clusters.
Key Features
Shannon entropy calculation in bits
GPU cluster crack time estimation
5-level visual strength indicator
Character diversity audit checklist
How to Use This Tool
- Type a password in the input field.
- Toggle password visibility using 'Show Password' if needed.
- Review the entropy score, strength meter, estimated crack time, and diversity checklist.
Why Use This Tool
- Evaluates real mathematical entropy rather than arbitrary complexity rules.
- 100% private and offline: passwords are never sent across any network.
Pro Tips
- Aim for at least 60 bits of entropy and 14+ characters for sensitive master passwords
Frequently Asked Questions
What is Shannon entropy in passwords?
Shannon entropy measures the information density and randomness of a password in bits. Passwords with 60+ bits of entropy are considered strong.