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Your password is never sent anywhere — all analysis runs entirely in your browser. Nothing leaves your device.
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Strength: —
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⏱ Crack Time Estimates
Patterns
💡 Improvement Tips
Checklist
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📊 Strength Benchmarks
How does your password compare?
Benchmark
Entropy
Your Score
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Entropy Guide
< 28 bits — Very Weak
28–49 bits — Weak
50–71 bits — Strong
>= 72 bits — Very Strong
ℹ️ How It Works
Entropy
Entropy = length × log₂(pool size). Higher entropy means more guesses are needed to crack the password by brute force.
Crack Time
Estimates are based on known attack speeds: online throttled (100/s), offline slow hash (10K/s), offline fast hash (10B/s), and GPU cluster (100T/s).
Pattern Detection
We check for keyboard walks (qwerty), repeated characters, sequential numbers, common words, and dictionary patterns — all of which reduce real-world security below the raw entropy score.
Privacy
100% client-side. Your password is never stored, logged, or transmitted. You can disconnect from the internet and this tool will still work.