16 Character Password Generator
Generate a 16-character password with all four classes. ~105 bits of entropy — safe for life.
Why pick 16 characters?
Sixteen characters from the full 94-character printable ASCII set yields about 105 bits of entropy — comfortably past every published threshold for "computationally infeasible" brute force, including projected post-quantum lower bounds for symmetric crypto. It's the length most security teams default to for service accounts, master passwords, and disk-encryption passphrases. This generator pulls each character independently from crypto.getRandomValues(), the browser's CSPRNG, so output is suitable for cryptographic use. Everything happens in your browser — no signup, no upload, no tracking.
Generated Password
Enable at least one character type
Strong
99.4 bits of entropy
Estimated crack time: centuries+(10 billion guesses/sec)
Bulk Generation
Count:
Options
Password Length16
4128
Character Types
Uppercase
(A-Z)
Lowercase
(a-z)
Numbers
(0-9)
Symbols
(!@#$%^&*_+-=)
Exclusions
Exclude Similar
(i,l,1,L,o,0,O)
Exclude Ambiguous
{}<>[]()/\|
Quick Presets
About 16-character passwords
16 random printable ASCII characters give ~105 bits of entropy — the recommended length for any credential you want to last a lifetime.
- Search space: 94^16 ≈ 4.0 × 10^31 possibilities
- Offline brute-force at 10^10 guesses/sec: ~63 trillion years average
- Even reduced to alphanumeric-only (62 chars): ~95 bits — still safe
- Recommended for: master passwords, root accounts, disk encryption
- Equivalent to a 5–6 word EFF diceware passphrase