Estimate how long attackers would need to crack your password. Based on entropy, character set, and current computing power.
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Understand the science behind password security and cracking estimates.
Assuming an attacker must try every possible password on average (middle of search space) at specified speed: Time = (2^entropy) / (2 × attempts_per_second). Faster computers reduce time, but proper passwords remain secure for years or longer.
Our estimates use realistic modern computing power. GPU-based attacks accelerate cracking, but massive entropy provides exponential protection.
A password crackable in hours is clearly weak. One requiring years or centuries is security against most attacks. However, remember: cracking time only matters if attackers possess password hashes from breaches.
Always use unique passwords for every account - this limits exposure if one account is breached, regardless of cracking time.
Every additional character dramatically increases cracking time due to exponential entropy growth. A 12-character password is exponentially stronger than 11 characters. Length is more important than complexity. Use our password generator to create long passwords, and verify strength with our entropy calculator and character set analyzer.
Shows cracking time for various attacker speeds and resources.
Based on current computing power and realistic attack speeds.
Understand why length and randomness are critical to security.
Questions about password cracking time and estimates.
Yes, estimates are based on realistic assumptions for brute-force attacks. Real-world cracking may be faster with specialized hardware (ASICs, GPUs) or slower if account protections include rate limiting and account lockouts.
Generate a new password using our password generator. Aim for 16+ characters from all character types. This dramatically increases cracking time from hours to centuries or longer.
Yes. Length is the single most important factor for security. A 20-character password using only lowercase letters is stronger than a 10-character password with all character types.
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