Analyze any password for entropy, crack time, and weaknesses
Yes. This tool runs entirely in your browser using JavaScript. Your password is never sent to any server, never logged, and never stored. You can verify this by disconnecting from the internet — the tool still works.
Entropy measures the randomness of a password in bits. Higher entropy = harder to crack. A password's entropy depends on its length and the size of its character set. For example, a 16-character password using uppercase, lowercase, numbers, and symbols has about 105 bits of entropy.
Crack time assumes an attacker using a modern GPU cluster capable of 10 billion guesses per second. Real crack time depends on the attack method — online attacks are much slower due to rate limiting, while offline attacks against weak hashes can be faster.