"Password123!" takes a computer less than a second to crack. A random 20-character password takes centuries. The difference isn't memorability — it's entropy, the measure of randomness.
What makes a password strong?
- Length beats complexity. Every extra character multiplies the combinations exponentially.
- Randomness beats patterns. Human brains are predictable; use a generator, not your pet's name.
- Uniqueness beats reuse. One breach shouldn't open all your accounts. Use a different password everywhere.
The 80-bit rule
Aim for at least 80 bits of entropy — roughly 13 random characters mixing letters, numbers, and symbols. Our generator shows you the exact entropy and estimated crack time for every password it creates.
Generate yours now — private, free:
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