Password Strength Meter

Strong passwords combine length, character variety, and absence of predictable patterns. Short passwords are weak no matter how random. Passwords based on dictionary words or common sequences (123456, password, qwerty) are easily guessed. This Password Strength Meter evaluates passwords in real time. Type or paste a password and see a strength rating (Weak, Fair, Good, Strong), a progress bar, and a checklist of what the password has or lacks. Suggestions help you improve. All analysis runs in your browser—your password never leaves your device.

The meter checks length (8+, 12+, 16+ characters), presence of uppercase, lowercase, digits, and symbols, and whether the password contains common weak patterns. Entropy—a measure of unpredictability—is estimated from character set and length. Longer passwords with more character types score higher. "Password123!" might score Fair: it has length and variety but contains a common word. "Xk9#mP2$vL7@q" scores Strong: random, long, mixed. Use it when choosing or changing passwords. Before saving a new password, run it through here to verify it meets your requirements.

This tool does not store or transmit your password. It runs entirely in JavaScript. Even on an insecure connection, your password is never sent anywhere. Use it for any password you want to check—existing passwords, candidate passwords, or policies you're testing. Combine it with a password manager: the manager stores passwords; this tool helps you evaluate them. For account policies (e.g. "must have 12+ chars and a symbol"), the checklist shows compliance at a glance.

Strength is a guide, not a guarantee. A "Strong" password can still be compromised if it's reused, written down, or exposed in a breach. Use unique passwords per account. Enable two-factor authentication where available. This meter helps you avoid obviously weak passwords and encourages better habits. Bookmark it for the next time you create or audit a password.