Strong Password Generator
Maximum Strength. Maximum Security.
Not all passwords are created equal. Our strong password generator builds passwords with high entropy across all four character sets, then shows you exactly how strong the result is — down to estimated crack time.
Generated locally in your browser · No data stored or transmitted
Why use this tool?
High Entropy by Default
Passwords use uppercase, lowercase, numbers, and symbols to maximise the character pool — directly increasing entropy and crack resistance.
Real-Time Strength Meter
See the strength rating and bit entropy of every password the moment it's generated. No guessing whether it's strong enough.
Crack Time Estimates
We calculate how long it would take a modern GPU cluster to brute-force your password. Strong passwords show billions of years.
No Dictionary Words
Random character selection means no real words, no names, no predictable patterns — the same vulnerabilities that make simple passwords weak.
Recommended 16+ Characters
Longer passwords are exponentially harder to crack. We default to 15 characters and encourage 20+ for high-value accounts.
Similar Character Exclusion
Optionally exclude lookalike characters (i, l, 1, O, 0) to make passwords easier to read without losing strength.
100% Private
Nothing leaves your browser
Instant
No loading, no server
Always Free
No account needed
Works Everywhere
Any device, any browser