Password Generator
A password generator creates cryptographically random passwords of specified length and character set, and calculates the entropy (strength) of the generated password.
- 1Entropy = L × log₂(N) bits
- 2L = password length; N = character set size
- 370+ bits is considered secure for most uses
- 4Longer is always stronger — prefer 16+ characters
16 characters, all printable ASCII (95 chars)=Entropy = 16 × log₂(95) = 104.9 bits — very strong
| Entropy (bits) | Strength | Time to crack (brute force) |
|---|---|---|
| < 40 | Very weak | Seconds to minutes |
| 40–55 | Weak | Hours to days |
| 56–70 | Fair | Years |
| 70–90 | Strong | Thousands of years |
| > 90 | Very strong | Longer than the universe |
References
🔒
100% Gratis
Ingen registrering
✓
Nøyaktig
Verifiserte formler
⚡
Øyeblikkelig
Resultater med én gang
📱
Mobilevennlig
Alle enheter