Password Generator — Free Strong Random Password Creator
Generate secure, random passwords instantly.
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About the Password Generator
A strong password is your first line of defense against unauthorized access. This generator uses your browser's cryptographically secure random number API (crypto.getRandomValues) — the same standard used by security software — so every password is genuinely unpredictable.
How it works
Charset = uppercase + lowercase + numbers + symbols
Entropy = length × log₂(charset size)
Example = 16 chars × 94 symbols → ~104 bits of entropy
104 bits of entropy would take billions of years to brute-force on the fastest hardware today.
What makes a password strong
- 📏Length matters most. Going from 12 to 16 characters adds exponentially more combinations.
- 🔣Including symbols and numbers expands the character pool, making each position harder to guess.
- 🚫Never reuse passwords. A breach at one site exposes all accounts that share the same password.
- 🔑The hardest part isn't generating a strong password — it's remembering one per site. That's what password managers are for.
Generated a great password? Store it safely with a password manager. 1Password keeps all your passwords encrypted and auto-fills them across devices →
Frequently Asked Questions
Is the Password Generator free?
Yes — completely free. No account and no data sent to a server.
Are my generated passwords sent to a server?
No. Passwords are generated entirely in your browser using a cryptographically secure random source. Nothing is transmitted anywhere.
Do I need an account?
No account, no login, and no signup required.
How long should my password be?
At least 16 characters for most accounts. For high-value accounts (email, banking), 20 characters is better. Every additional character multiplies crack time exponentially.
What is a passphrase and should I use one?
A passphrase is four or more random words (like "correct-horse-battery-staple"). At 25+ characters it is as strong as a 16-character random password and much easier to memorize. Use a passphrase for anything you type from memory — like a password manager master password.