Password Strength Analyzer

Real-time entropy estimate, common pattern checks, and crack-time ranges. Great for demos, security awareness, and explaining best practices.

Strength: —

Estimated entropy

bits (heuristic)

Estimated crack time

Character set

Score

0–100
Note: Crack-time depends heavily on hashing algorithm + attacker hardware. This uses a conservative “online-ish” and a faster “offline-ish” guess to show ranges.

What I’m checking

  • Length + character diversity
  • Repeats (aaaa, 121212)
  • Simple sequences (abcd, 1234)
  • Common passwords (small demo list)
  • Common words / patterns (admin, password, qwerty, years)

Suggestions

  • Type a password to see suggestions.

Attacker speed (for crack-time)

Use this slider to demonstrate why strong hashing + MFA matters.
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