Password Strength Checker & Generator
Test password strength with real-time analysis and generate secure passwords. Get detailed feedback on password security and learn how to create stronger passwords.
Password Strength Checker
Enter a password to see strength analysis
Secure Password Generator
Password Security Tips
Password Guidelines
Do
- • Use at least 12 characters
- • Mix uppercase, lowercase, numbers, symbols
- • Use unique passwords for each account
- • Use a password manager
- • Enable two-factor authentication
Don't
- • Use personal information
- • Use common passwords
- • Use keyboard patterns
- • Share passwords
- • Reuse passwords across sites
Examples
- ✗ password123
- ✗ qwerty
- ✗ 123456
- ✓ X7m$9kL2@nP4
- ✓ Tr0ub4dor&3
How to Check Password Strength
Strength Analysis
- 1Enter your password in the checker field (it stays private in your browser)
- 2View real-time strength analysis with detailed feedback
- 3Review suggestions for improving password security
- 4Check estimated crack time to understand vulnerability
Password Generation
- 1Choose password length (12+ characters recommended)
- 2Select character types: uppercase, lowercase, numbers, symbols
- 3Click "Generate Password" to create a secure password
- 4Copy the password or test its strength directly
Password Security Best Practices
Length Matters
Use at least 12 characters, preferably 16 or more. Each additional character exponentially increases security against brute force attacks.
Character Variety
Mix uppercase letters, lowercase letters, numbers, and special characters to increase the character space and complexity.
Avoid Patterns
Don't use keyboard patterns (qwerty), sequences (123, abc), or repeated characters that are easy to guess.
Unique Passwords
Use a different password for each account. If one is compromised, your other accounts remain secure.
Password Managers
Use a reputable password manager to generate, store, and autofill unique passwords for all your accounts.
Two-Factor Authentication
Enable 2FA whenever possible. Even if passwords are compromised, 2FA provides an additional security layer.
Common Password Mistakes to Avoid
What NOT to Do
- • Using personal information (birthdate, name, pet names)
- • Common passwords (password123, qwerty, 123456)
- • Keyboard patterns (asdf, 1qaz2wsx)
- • Simple substitutions (@ for a, 3 for e)
- • Reusing passwords across multiple sites
- • Sharing passwords via email or text
- • Writing passwords on sticky notes
Security Best Practices
- • Use random, complex passwords for each account
- • Enable two-factor authentication everywhere
- • Use a password manager for convenience and security
- • Regularly update passwords for important accounts
- • Use passphrase methods for memorable passwords
- • Monitor accounts for suspicious activity
- • Keep security software updated
Password Strength Examples
Very Weak Passwords
Avoid These!password123456qwertyabc123These passwords can be cracked in seconds and offer no real protection.
Weak Passwords
Still VulnerablePassword123john1990welcome!mydog2024Better than very weak, but still predictable and vulnerable to dictionary attacks.
Strong Passwords
Much Better!X7m$9kL2@nP4qTr0ub4dor&3Green!Mn8#Qx2$Pk9*RsThese passwords are long, complex, and random - much harder to crack.
Frequently Asked Questions
How does the password strength checker work?
Our password strength checker analyzes multiple factors including length, character variety, common patterns, dictionary words, and entropy. It provides a comprehensive security score and detailed feedback on how to improve password strength.
What makes a password strong?
A strong password should be at least 12 characters long, include uppercase and lowercase letters, numbers, and special characters. It should avoid personal information, common words, keyboard patterns, and repeated characters.
How accurate is the crack time estimation?
The crack time estimation is based on entropy calculations and assumes modern attack methods with billions of guesses per second. While estimates provide good relative comparisons, actual attack resistance depends on many factors including attack methods and computing power.
Is it safe to check my password on this tool?
Yes, all password analysis happens entirely in your browser. No password data is sent to our servers or stored anywhere. Your passwords remain completely private and secure on your device.
Should I use the generated passwords for real accounts?
The generated passwords are cryptographically secure and suitable for real accounts. However, we recommend using a dedicated password manager to generate and store unique passwords for each of your accounts.
Why should I avoid common passwords?
Common passwords like "password123" or "qwerty" are included in attack dictionaries and can be cracked within seconds. Using unique, complex passwords significantly increases security and protects against automated attacks.
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