Password Strength Checker

Check how strong a password is with a live score (0 – 4), a color bar, entropy bits, and an estimated time-to-crack at 10 billion guesses per second. A checklist flags missing criteria (length ≥ 12, uppercase, lowercase, digits, symbols, no common patterns). The tool also warns on common passwords like “password” or “123456”.

Nothing ever leaves your browser — no network calls, no logging. For generating strong passwords use password generator; to check if a password is already in a breach, password breach checker.