Password Strength Analyzer
Calculate entropy, crack time, and identify security patterns in your passwords.
A strong password is your first line of defense against unauthorized access. This tool provides a deep technical analysis of your password strength using information theory (entropy) and brute-force estimations.
Key Features
- Entropy Calculation: Measures the mathematical complexity of your password in bits.
- Crack Time Estimation: Predicts how long it would take different classes of hardware to crack your password.
- Pattern Detection: Identifies common risks like consecutive characters, repeated patterns, and dictionary words.
- Visual Feedback: A dynamic strength meter that provides instant visual cues on security levels.
- 100% Private: Your password is processed entirely in your browser using local JavaScript. It is never sent to any server or stored anywhere.
Understanding Entropy
Entropy (measured in bits) represents the number of guesses a brute-force attacker would need to make to find your password. Higher entropy means a more secure password. Generally, 80 bits or more is considered strong for most online accounts.
Password Strength Analyzer
Privacy Check: Your password is processed locally in your browser. It is never sent to our servers or stored in logs. All calculations are performed using information theory in memory.