How Strong is My Password?
See the math behind password strength with clear, conservative estimates.
Do not paste real passwords. Use this only for generated or throwaway examples. Nothing you type here leaves your browser.
0 bits of entropy
40 60 80 100
- Pool size
- 0
- Combinations
- 0
- Search space
- 0
| Scenario | Guess rate | Average crack time | Worst case |
|---|---|---|---|
| Online throttled login | |||
| Online rate-limited / lockout | |||
| Offline fast hash (GPU) | |||
| Offline very fast / worst-case lab |
Real crack time depends heavily on hashing algorithm, breaches, password reuse, and attacker knowledge.
This assumes random guessing, not targeted attacks.