Password Entropy Explained — Bits of Security

آمن 100% مجاني وغير محدود بدون تسجيل يعمل في المتصفح

What Is Entropy?

Entropy measures randomness in bits. Each bit doubles possible guesses. 40 bits = 1 trillion guesses. 80 bits = 1 septillion guesses. Use our 12-char generator for ~78 bits of entropy.

How Much Do You Need?

  • 40 bits: Minimum, vulnerable
  • 60 bits: Decent for most accounts
  • 80 bits: Strong
  • 100+ bits: Overkill for everything except encryption