🔒 Password Strength Checker

Analyze password strength, check security level, and get recommendations

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🔍 Password Analysis

Enter Password to Analyze

Your password is not stored or transmitted anywhere. Analysis happens locally in your browser.

📊 Detailed Security Analysis

🔢 Entropy Analysis

Password entropy measures the randomness and unpredictability of your password. Higher entropy means stronger security against brute-force attacks.

Enter a password to see entropy analysis

⏱️ Crack Time Estimation

Estimated time it would take to crack your password using modern hardware and different attack methods.

Enter a password to see crack time estimates

🎯 Pattern Detection

Common patterns that make passwords vulnerable to dictionary attacks and social engineering.

Enter a password to detect patterns

📈 Improvement Score

Score breakdown showing which aspects of your password contribute to its overall strength.

Enter a password to see score breakdown

🚨 Data Breach Check

Check if your password has appeared in known data breaches. This uses secure hashing to protect your privacy.

🎲 Secure Password Generator

Generate a strong, secure password based on our analysis recommendations.

💡 Password Security Best Practices

🔐 Use Unique Passwords

Never reuse passwords across multiple accounts. Each service should have its own unique password to prevent credential stuffing attacks.

📏 Length Over Complexity

Longer passwords are exponentially harder to crack. A 16-character password with mixed characters is far stronger than an 8-character complex one.

🎭 Avoid Personal Information

Don't use birthdays, names, addresses, or other personal information that can be found on social media or public records.

🏪 Use a Password Manager

Password managers generate, store, and automatically fill unique passwords for all your accounts securely.

🔄 Regular Updates

Change passwords regularly, especially for sensitive accounts like banking, email, and work-related services.

🛡️ Enable Two-Factor Authentication

Even with strong passwords, enable 2FA whenever possible for an additional layer of security.

📖 Password Security Guide

Understanding Password Strength

Password strength is determined by several factors working together:

  • Length: The most important factor - each additional character exponentially increases security
  • Character Variety: Mix of uppercase, lowercase, numbers, and symbols
  • Unpredictability: Avoiding common words, patterns, and personal information
  • Uniqueness: Using different passwords for different accounts

Password Strength Levels

Strength Level Score Range Characteristics Crack Time
Very Weak 0-20 Short, common words, no variety Seconds to minutes
Weak 21-40 Basic requirements, predictable patterns Hours to days
Fair 41-60 Some variety, moderate length Weeks to months
Good 61-80 Good length and character variety Years to decades
Strong 81-100 Long, unpredictable, high entropy Centuries or more

Common Password Mistakes

  • Using dictionary words or common phrases
  • Substituting numbers for letters (e.g., "p@ssw0rd")
  • Adding numbers or symbols only at the end
  • Using personal information like birthdays or names
  • Reusing passwords across multiple sites
  • Using keyboard patterns (e.g., "qwerty", "123456")

Best Practices for Strong Passwords

  1. Use passphrases: Combine multiple unrelated words
  2. Add randomness: Include random numbers and symbols
  3. Make it long: Aim for at least 12-16 characters
  4. Use a password manager: Generate and store unique passwords
  5. Enable 2FA: Add an extra layer of security
  6. Update regularly: Change passwords periodically