Strong Password Generator creates maximum-security passwords that are guaranteed to include all required character types — at least one uppercase letter, one lowercase letter, one number, and one symbol. Unlike random password generators that may skip character types, this tool enforces variety for passwords that satisfy strict enterprise password policies. All generation happens in your browser — nothing is ever sent to a server.
The generator uses crypto.getRandomValues() to generate cryptographically random characters, then applies a shuffle algorithm to ensure at least one character from each required character set appears in the output. This meets OWASP, NIST 800-63B, and most enterprise password policy requirements.
Entropy measures unpredictability. A 20-character password with uppercase, lowercase, numbers, and symbols from a pool of 95 characters has 95²⁰ ≈ 3.6 × 10³⁹ combinations — brute forcing it would take longer than the age of the universe.
The random generator selects from all enabled character types randomly. This strong generator guarantees at least one character from each selected type appears, which is required by many enterprise password policies.
No. Generation runs entirely in your browser using crypto.getRandomValues(). Your password never leaves your device.
At least 20 characters for master passwords and admin credentials. NIST recommends length over complexity — longer passwords with all character types provide the best balance of security and policy compliance.
Yes. NIST 800-63B recommends passwords of 8+ characters (with 15+ for sensitive accounts) and allows all character types. This generator's defaults exceed NIST minimums.
Yes, completely free. No account, no limits.
Tool workspace
Free strong password generator online — create high-entropy passwords guaranteed to include uppercase, lowercase, numbers, and symbols. Max security, no login, runs in browser.
Input
Length: 20, all character types enforced
Output
X7#fQ9m$2Lp!K4z@Rm3&
