Random Password Generator
Generate cryptographically secure, random passwords with custom length and character sets.
Character Types
Options
Generated Passwords — Click to copy
Choose your settings, then select Generate Passwords to create fresh passwords in your browser.
🔒 Security Note: All passwords are generated entirely in your browser using the Web Cryptography API (crypto.getRandomValues). No passwords are ever sent to a server or stored anywhere.
How do I generate a password with my chosen settings?
Set the length and allowed character types, then select Generate Passwords to create a fresh set in your browser. Selecting a character type makes it available to the generator; it does not guarantee each password includes every selected type. Generate again if a site's requirements are not met.
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How to use this calculator
Secure Password Generator — Cryptographically Random
A strong, unique password is the first line of defense for every account you own. Our password generator creates cryptographically secure random passwords using the browser's built-in crypto.getRandomValues() API — the same technology used by professional security software. No passwords are transmitted over the network or logged anywhere; everything happens locally in your browser.
You can customize the character set (uppercase, lowercase, numbers, symbols), adjust the length from 6 to 64 characters, and optionally exclude visually ambiguous characters like 0 (zero) and O (capital O) that can cause confusion when reading a password aloud or typing it manually.
What Makes a Password Strong?
Password strength is primarily determined by two factors: length and character variety. A longer password with a greater variety of characters creates an astronomically larger search space for attackers using brute-force methods.
Weak
fluffy123Short, dictionary words, no symbols. Crackable in seconds.
Strong
G7#mK2pQ12+ chars with mixed case, numbers, symbols. Hours to crack.
Very Strong
Xp!9mK#4Wq@3rZv16+ chars with full character set. Effectively uncrackable.
Password Security Best Practices
- Use a unique password for every account. If one site suffers a data breach and you reuse passwords, attackers can use credential stuffing to access your other accounts automatically.
- Use a password manager. Tools like Bitwarden, 1Password, or Dashlane securely store and autofill unique passwords so you never need to remember them. Your master password is the only one you need to memorize.
- Enable two-factor authentication (2FA). Even a strong password can be phished. 2FA adds a second verification step that protects you even if your password is compromised.
- Aim for at least 16 characters. Modern GPU-based cracking rigs can test billions of short passwords per second. Length is exponentially more powerful than complexity alone.
- Never share passwords. Even with people you trust. If a service requires your password to be shared, use a temporary, throw-away credential.