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🔐 Password Crack-Time Estimator

Advanced password strength analysis with quantum computer simulation

Generate Secure Passwords

What is this?

This tool estimates how long it would take to crack your password using different attack scenarios. It uses advanced algorithms including Grover's quantum algorithm for quantum computer attacks. Auto-updates with latest hardware benchmarks!

What do I do?

  1. Enter your password (or leave blank and enter entropy bits directly)
  2. Choose an attack scenario (quantum computer, supercomputer, etc.)
  3. Choose hash algorithm (affects cracking speed)
  4. Click "Calculate Crack Time" to see results
Enter password above to see length

What are Entropy Bits?

Entropy bits measure the randomness and unpredictability of your password. Higher entropy means the password is harder to guess or crack.

Character Set Impact:
  • Lowercase (a-z): ~4.7 bits per character
  • Uppercase (A-Z): ~4.7 bits per character
  • Numbers (0-9): ~3.3 bits per character
  • Symbols (!@#$%): ~5.9 bits per character
Security Levels:
  • 0-19 score: Very Weak (easily cracked)
  • 20-39 score: Weak (minutes to hours)
  • 40-59 score: Moderate (hours to days)
  • 60-79 score: Strong (days to weeks)
  • 80-99 score: Excellent (weeks to months)
  • 50+ chars: Moderate (length-based)
  • 128+ chars: Strong (length-based)
  • 520+ chars: Extra Strong (length-based)
Formula: Entropy = log₂(character_set_size^password_length) - pattern_penalties + complexity_bonuses
How many identical devices to use in parallel (e.g., 4 GPUs, 8 servers)
CPU cores, GPU cores, or quantum qubits per device
How efficiently parallel processing scales (100% = perfect scaling)