Password Strength Tester

Analyze password security with entropy calculation, crack time estimates, and strength rating.

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Strength Rating
Very Strong
Score: 100/100 · Entropy: 111 bits
Lowercase
Yes
Uppercase
Yes
Numbers
Yes
Symbols
Yes
Estimated Crack Time
Centuries
At 10 billion guesses per second

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Creating Strong Passwords

A strong password is your first line of defense against unauthorized access. Modern password cracking tools can try billions of combinations per second, making short or simple passwords vulnerable.

Password Best Practices

  • Use at least 12-16 characters.
  • Include uppercase, lowercase, numbers, and symbols.
  • Avoid dictionary words, names, and dates.
  • Use a unique password for every account.
  • Consider a password manager to generate and store complex passwords.
  • Enable two-factor authentication (2FA) wherever possible.

Frequently Asked Questions

Password strength is based on length, character variety (lowercase, uppercase, numbers, symbols), and uniqueness. More characters from larger pools create exponentially more combinations, making passwords harder to crack.

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