Random Password Generator — Free, Strong & Secure

Yes, as long as the generator works locally in your browser. Our random password generator uses the browser's native cryptographic API (crypto.getRandomValues()) and sends absolutely no data to any server. You can verify this by pressing F12 → Network tab and checking that zero requests are made when generating passwords. You can even disconnect from the internet and it will keep working.

According to NIST guidelines, passwords should be a minimum of 12 characters for basic accounts and 16+ characters for sensitive accounts like banking, primary email, or cloud storage. Length is the single most important factor in password strength — each additional character multiplies the possible combinations exponentially.

No, never. Everything happens entirely in your browser using JavaScript. We have no server-side processing, no database, and no logging. The password history shown on the page only exists in temporary browser memory (RAM) and disappears completely when you close the tab or refresh the page.

Entropy measures the randomness of a password in bits. It's calculated as log2(C^L) where C is the character set size and L is the password length. A 16-character password using all 94 printable ASCII characters has approximately 104 bits of entropy. Passwords with 80+ bits are considered very secure, and 100+ bits are considered unbreakable with current technology. You can check your password's entropy with our free tool.

Absolutely yes. It's practically impossible to memorize unique, strong passwords for the dozens (or hundreds) of online accounts most people have. A password manager like Bitwarden (free), 1Password, KeePass, or LastPass encrypts all your passwords under a single master password, making it easy to use a different strong password for every service.

According to NIST's latest guidelines, frequent password changes are no longer recommended if your passwords are strong and unique. However, you should change a password immediately if: you suspect your account has been compromised, a service you use suffers a data breach, or your current password is weak or reused across multiple accounts.

Two-factor authentication adds a second layer of security beyond your password. After entering your password, you also need a second factor: a code from an app like Google Authenticator or Authy, a hardware key like YubiKey, or a biometric scan. Even if an attacker obtains your password, they cannot access your account without the second factor. Always enable 2FA on every account that supports it.

Yes, our random password generator is fully optimized for Android and iOS devices. It works perfectly on Chrome, Safari, Firefox, Edge, and all modern mobile browsers. Since it runs entirely in your browser, it also works offline once the page has loaded — perfect for generating passwords without an internet connection.

A brute force attack is when an attacker systematically tries every possible combination of characters until the correct password is found. Modern hardware can try billions to trillions of combinations per second. A short, simple password (e.g., 6 lowercase letters) can be cracked in seconds. A strong, random 16-character password with mixed character types would take trillions of years to crack — making it effectively impossible.

A password is typically a short, random string of characters (e.g., k9#Lm2$xR). A passphrase is a longer sequence of random words (e.g., "correct horse battery staple"). Passphrases are easier to remember and can be equally secure if they're long enough. You can generate both with our tools: use this page for random passwords or our passphrase generator for word-based alternatives.