Password Strength Meter

Estimate how long it would take to crack your password. Uses Dropbox's zxcvbn algorithm. Detects common patterns, dictionary words, and sequences. 100% private — analysis happens in your browser.

Enter Password

Strength: — Score: 0/4

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About Password Strength Meter

🧠 Smart Analysis

Uses Dropbox's zxcvbn algorithm — the same library used by major platforms. Detects dictionary words, common patterns, dates, repeats, sequences, and keyboard walks.

⏱ Crack Time

Estimates offline cracking speed (10B guesses/sec with fast hash, or 10K/sec with bcrypt). Shows realistic crack time, not just entropy bits.

💡 Actionable Feedback

Specific suggestions: "Add another word or two" or "Avoid repeated words." Not just a score — tells you how to improve.

🔒 100% Private

Password analysis happens entirely in your browser. The password never leaves your device. No keylogging, no server, no tracking.