Password Strength Analyzer
Analyze password strength with entropy calculation, crack time estimation, character set composition, and strength scoring. Test your passwords against common breach lists. Essential for security awareness and credential policy validation.
Password Strength Metrics Explained
Entropy measures password unpredictability in bits. Higher entropy means stronger resistance against brute-force attacks. Each bit doubles the number of possible combinations. A password with 60+ bits of entropy is generally considered strong.
Crack time estimates how long it would take to brute-force the password at 1 trillion guesses per second (modern GPU speeds). Real-world cracking time depends on the attacker's hardware and whether the password hash is known.
Common password check compares against a built-in list of the most frequently breached passwords. If your password appears on this list, it will be cracked instantly regardless of its length or character variety.