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Test your password against modern brute-force dictionaries and RTX cold-cracking speeds.
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Calculations run locally via zxcvbn entropy engine.
Is your password truly secure — or just "looks strong"? Our checker goes beyond basic length checks, simulating real-world cracking scenarios using modern brute-force dictionaries.
No data is ever stored. Everything runs securely in your browser memory.
Estimates cracking time based on modern RTX hardware cluster capabilities.
Measures true mathematical unpredictability (bits) rather than just regex rules.
Most tools only check for a mix of characters. That's not enough anymore. Modern attackers use precomputed dictionaries, RTX GPU clusters, and hybrid brute-force attacks. Our tool estimates cracking time based on realistic hardware — not outdated assumptions.
Longer passwords increase search space exponentially (the most efficient defense).
Entropy measures unpredictability. 40 bits is crackable, while 80+ bits is extremely secure.
Your results show estimated crack times in different environments:
If a hacker steals a database hash, they use arrays of graphics cards to test billions of variations per second. This is the real test of a password.
Rate-limited login attempts. This mimics a live website login where attempts are slowed down after failures.
Many think "More symbols = stronger", but Length + Randomness > Complexity alone. A 20-character lowercase random password is stronger than an 8-character complex one. Random passphrases like river-planet-atomic-candle outperform short complex strings every time.
Yes. Your password is analyzed locally using the zxcvbn entropy engine and is never stored or transmitted to our servers.
60+ bits is strong for most users, while 80+ bits is enterprise-grade security.
Because modern attackers use dedicated hardware clusters (RTX GPU rigs) to crack leaked password hashes offline at massive speeds.
No. Always use unique passwords. If one site is breached, your other accounts remain secure.