Password Strength Checker

Not sure if your password is strong enough? The Password Strength Checker analyzes your password in real time and gives you a clear visual meter showing its strength, an entropy score measured in bits, and an estimated time it would take an attacker to crack it using modern hardware.

The tool evaluates multiple factors including length, character variety, common patterns, dictionary words, repeated characters, and keyboard sequences. It uses the widely respected zxcvbn algorithm approach to provide realistic strength estimates rather than simplistic rules like "must contain a symbol." This gives you a much more accurate picture of how resistant your password is to real-world attacks.

Everything runs entirely in your browser - your password is never sent to any server or stored anywhere. Use this tool to audit existing passwords, test new ones before committing to them, or educate yourself about what makes passwords easy or hard to crack.