Check password strength and security in real time — entropy-based scoring with common weak-password rules. Everything runs locally in your browser; nothing is uploaded.
All calculations run locally in your browser. Your password is never uploaded or stored.
Enter a password above and the strength analysis will appear here in real time
Password Strength Checker is a free online tool that rates how safe a password is in real time. The score is based on estimated entropy and rules that catch common weak patterns, and you get specific suggestions for making the password harder to crack. Checking runs entirely locally — the password is never uploaded.
It scores the password in real time using its entropy and rules for common weak passwords, then shows a clear security rating.
No. Checking runs entirely locally and the password is never uploaded or stored.
Yes, it gives specific tips, such as adding length or mixing character types, to make the password stronger.
