Generated Passwords
How It Works
- Set Password Length: Use the slider to select password length from 8-128 characters. Security experts recommend minimum 12 characters for standard accounts and 16+ for high-security accounts.
- Choose Character Types: Enable uppercase letters (A-Z), lowercase letters (a-z), numbers (0-9), and symbols (!@#$%^&*) to increase password entropy and meet site-specific requirements.
- Generate Securely: Click generate to create passwords using crypto.getRandomValues() which accesses OS-level entropy sources, providing cryptographically secure randomness meeting FIPS 140-2 standards.
- Copy and Store Safely: Copy generated passwords with one click. Store them in a password manager (1Password, Bitwarden, LastPass) rather than writing them down or saving in plain text files.
Manual vs Automated Password Generation
| Feature | Manual Creation | AI-Powered Generator |
|---|---|---|
| Password Strength | Weak patterns (Password123!) | Cryptographically random, high entropy |
| Entropy Calculation | Guess entropy manually | Real-time entropy display (bits) |
| Length Control | Count characters manually | Slider for 8-128 characters |
| Character Mix | Forget to include symbols/numbers | Toggle all character types easily |
| Security Standard | Vulnerable to dictionary attacks | FIPS 140-2 compliant generation |
| Memorability | Hard to remember random strings | Option for pronounceable passwords |
Password Generation Examples
Example 1: Standard Account Password
Length: 16 characters
Character Types: Uppercase, Lowercase, Numbers, Symbols
Entropy: ~95 bits
Use Case: Email, social media, standard accountsaB3!xK9@mN2#pQ7$
Strength: Very Strong
Entropy: 95.2 bits
Character Set: 95 possible characters
Combinations: 4.4 × 10^31
Crack Time: 1.4 trillion years (at 1 billion attempts/sec)Key Changes:
A 16-character password with all character types (uppercase, lowercase, numbers, symbols) provides 95.2 bits of entropy, calculated as log2(95^16). This exceeds NIST SP 800-63B recommendations for high-security passwords (80+ bits). The 95-character set includes 26 uppercase + 26 lowercase + 10 digits + 33 symbols, creating 4.4 × 10^31 possible combinations. Even with a hypothetical attacker making 1 billion password attempts per second (far beyond current capabilities), brute-forcing would take 1.4 trillion years. This makes the password effectively immune to brute-force attacks. The mixed character types also defeat dictionary attacks and rainbow table lookups, making it suitable for protecting sensitive accounts like banking, email, and work systems.
Example 2: High-Security System Password
Length: 24 characters
Character Types: All enabled
Entropy: ~142 bits
Use Case: Root access, encryption keys, admin accountsaB3!xK9@mN2#pQ7$rS4%tV8^
Strength: Maximum
Entropy: 142.8 bits
Character Set: 95 possible characters
Combinations: 1.9 × 10^47
Crack Time: 6.0 × 10^29 years (quantum-resistant)Key Changes:
A 24-character password with full character set provides 142.8 bits of entropy, entering quantum-resistant territory. While Grover's algorithm could theoretically reduce effective bits to ~71 (still very secure), current quantum computers are decades from this capability. The 1.9 × 10^47 possible combinations make this password suitable for protecting root access, encryption keys, certificate authorities, and other critical systems. This exceeds NSA Suite B requirements for TOP SECRET information (128-bit security). The password length also provides defense-in-depth: even if an attacker discovered a weakness reducing the effective character set, the length maintains security. Use passwords of this strength for system administrator accounts, database root users, SSL certificate private keys, and any scenario where compromise would be catastrophic.
Frequently Asked Questions
How long should my password be for maximum security?
For standard accounts (email, social media), use 12-16 characters with all character types, providing 70-95 bits of entropy. For high-security accounts (banking, work systems), use 16-20 characters achieving 95-119 bits of entropy. For critical systems (root access, encryption keys), use 24+ characters reaching 142+ bits of entropy, which is quantum-resistant. NIST SP 800-63B recommends minimum 8 characters but security researchers advocate 12+ characters. Each additional character exponentially increases crack time: a 12-character password with all character types takes 2,000 years to crack at 1 billion attempts/second, while a 16-character password takes 1.4 trillion years. Longer passwords also provide future-proofing against improved attack techniques and computing power increases.
Should I include special characters in every password?
Yes, include special characters whenever the system allows them. Special characters increase the character set from 62 (alphanumeric only) to 95 (with symbols), significantly boosting entropy. A 12-character alphanumeric password has 71.6 bits of entropy, while adding symbols increases it to 78.8 bits—making it 150× harder to crack. However, some systems restrict certain special characters (!@#$%^&* are widely accepted, but []|\\ may be restricted). The password creator uses commonly-accepted symbols to maximize compatibility. If a site rejects your password, try generating without symbols, but increase length to compensate: a 16-character alphanumeric password (95.3 bits) is stronger than a 12-character password with symbols (78.8 bits). Always prioritize length over character variety when forced to choose.
How is this different from browser password generators?
Browser password generators (Chrome, Firefox, Safari) are excellent and also use cryptographically secure random number generation. The main differences are customization and transparency. This tool lets you control exact length (8-128 characters vs browser limits of typically 15-20), choose specific character types (some browsers force symbols even when sites don't accept them), and generate multiple passwords for comparison. You can also see the exact entropy calculation and security metrics. Browser generators are tightly integrated with password managers for convenience, while this tool is platform-agnostic and works for any use case (API keys, encryption passphrases, database passwords) not just website logins. Both are secure; choose browser generators for convenience with website logins, and use this tool for custom requirements, bulk generation, or non-browser password needs.