Toolgeist › Security
Password Crack Time Estimator — By Attack Speed
Type a password to see estimated crack time across several real attack scenarios — a rate-limited online login, an offline fast-hash attack, and a GPU cluster brute force — since "how long to crack" has a very different answer depending on what the attacker actually has access to.
How to use Crack Time Estimator
- Type your password.
- Read the estimated crack time under each attack scenario.
- See which scenario is most relevant to how the password is actually used.
Frequently asked questions
- Why do the estimates vary so much between scenarios?
- A rate-limited login might allow only a few guesses per second, while an offline GPU attack against a leaked hash can attempt billions per second — the same password survives very different lengths of time.
- Which scenario should I actually worry about?
- For a password protecting an online account with login rate-limiting, the online scenario is most relevant; for a password whose hash could leak in a data breach, the offline scenarios matter more.
- Is this the same as the Entropy Calc?
- It builds on the same underlying entropy math but converts it into a concrete time estimate per attack scenario, rather than a single bits number.
Related Security tools
Also searched for: how long to crack my password · password crack time by gpu · brute force time estimator
Browse all 738 free tools on Toolgeist →