Estimate password strength and entropy
Checked entirely in your browser — nothing is sent anywhere.
Password Strength Checker estimates how strong a password is by calculating its entropy and flagging common weaknesses, with concrete suggestions.
The check runs entirely in your browser — your password is never sent or stored.
No, the analysis runs entirely in your browser and nothing is transmitted or stored.
Entropy estimates how unpredictable a password is, in bits — higher means harder to guess. Aim for 60+ bits.
It is a strong indicator, but always use unique passwords and a password manager plus 2FA.
