What is a Password Strength Checker?

A Password Strength Checker is a free online tool that evaluates the security of your password and provides a strength score with detailed feedback. It analyzes password length, character variety, common patterns, dictionary words, and known breached passwords to tell you exactly how strong — or weak — your password is, along with specific suggestions for improvement.

Why check your password strength?

Many people believe their passwords are strong when they are actually easily crackable. A password like "Summer2024!" seems complex but is predictable. This checker reveals vulnerabilities you might not see — common substitutions, keyboard patterns, and dictionary words within your password. Knowing your password's actual strength helps you make informed decisions about your account security.

How does the checker work?

Enter your password (it never leaves your browser). The checker analyzes: length (longer is better), character diversity (mix of types), common patterns (sequential numbers, keyboard walks, repeated characters), dictionary words and names, known breached password databases, and estimated crack time. It provides a score from very weak to very strong, plus actionable suggestions to improve a weak password.