Analyze password security with real-time visual feedback and strength estimation
Password strength is determined by several factors: length, character variety, and unpredictability. A strong password combines uppercase and lowercase letters, numbers, and symbols, and is at least 12 characters long. This visualizer analyzes these factors and estimates how long it would take to crack your password using brute-force attacks. Longer passwords with greater character variety are exponentially harder to crack.
This tool evaluates five key aspects of your password: length (longer is better), uppercase letters (adds complexity), lowercase letters (adds complexity), numbers (essential for strength), and symbols (most important for security). The strength meter combines these factors into an overall score displayed as a visual bar. The color indicates relative strength: red (weak), yellow (moderate), and green (strong).
Based on password characteristics, the tool provides a rough estimate of how long it would take to crack the password through brute-force attack, assuming one guess per nanosecond. This gives you a practical sense of the password's resistance to automated attacks. Passwords rated "very strong" would take decades or longer to crack.
If your password scores low, increase its length and add character variety. Use a mix of uppercase, lowercase, numbers, and symbols. Avoid dictionary words, personal information, and common patterns. The longer the password, the exponentially harder it becomes to crack. For maximum security, use our password generator or passphrase generator to create strong passwords automatically.
Complement this visual analysis with our Password Strength Checker for real-time feedback, use our Password Character Set Analyzer to understand character composition, test against databases using our Weak Password Checker, or generate passwords in bulk with our Bulk Password Generator.
No. All analysis happens locally in your browser. Your password is never stored or sent anywhere—complete privacy guaranteed.
The estimate is based on theoretical brute-force attacks. Real-world security also depends on how the service stores passwords (with salt and hashing) and security practices.
We recommend at least 12 characters. For sensitive accounts like banking or email, 16+ characters provide better security. Always use varied character types.