Password Strength Checker
Analyze your password's strength and get improvement tips.
Enter Password
Your password is analyzed locally and never sent to any server.
Requirements
At least 8 characters
At least 12 characters (recommended)
Lowercase letters (a-z)
Uppercase letters (A-Z)
Numbers (0-9)
Special characters (!@#$%...)
No repeating characters (aaa)
No sequential patterns (123, abc)
No common passwords
Password Tips
- •Use a passphrase: combine random words (e.g., "correct horse battery staple")
- •Use a password manager to generate and store unique passwords
- •Never reuse passwords across different accounts
- •Enable two-factor authentication when available
- •Avoid personal information (birthdays, names, pet names)
About Password Security
Strong passwords are your first line of defense against unauthorized access. This tool analyzes your password locally in your browser - it's never sent to any server.
What Makes a Strong Password?
- Length - Longer is better (16+ characters recommended)
- Complexity - Mix of letters, numbers, and symbols
- Unpredictability - Avoid common patterns and words
- Uniqueness - Different password for each account
Password Entropy
Entropy measures the randomness of your password in bits. Higher entropy means more possible combinations, making the password harder to crack through brute force attacks.