Random Password Generator: Strong, Secure Passwords
Weak passwords get guessed; strong ones get generated. This free random password generator creates cryptographically strong passwords in your browser — pick a length, choose your character sets, and copy a password nobody could guess. Nothing is ever sent or stored.
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How to use the password generator
- Set the length. 16 is a great default; 20+ for anything critical. Longer beats cleverer, every time.
- Choose character types. All four checked gives the strongest result; uncheck symbols only if a site rejects them.
- Generate. Every password is guaranteed to include at least one character from each type you picked.
- Copy and save it in a password manager — never in a notes app, email draft, or sticky note.
What actually makes a password strong
Strength is math, not mystery. A password's guessing difficulty is measured in bits of entropy: length × log₂(pool size). Our meter shows it live:
- 8 lowercase letters ≈ 38 bits — crackable in minutes on modern hardware.
- 12 mixed characters ≈ 72 bits — solid for everyday accounts.
- 16 characters, all four types ≈ 103 bits — beyond brute force for the foreseeable future.
- 20+ characters ≈ 128+ bits — effectively unguessable.
Two things matter more than symbols: length and uniqueness. A long password reused everywhere falls with one breach; a unique 16-character random string per site doesn't. For the science behind it, see Wikipedia's article on password strength.
Private by design
- Generated locally. Passwords are created in your browser with crypto.getRandomValues() — the same cryptographic randomness your browser uses for its own security features.
- Never transmitted. Nothing leaves your device; there's no server to breach and no log to leak.
- Never stored. Refresh the page and the password is gone forever — which is exactly why step 4 above says save it in a manager (Privacy Policy).
Password habits that actually work
- Use a password manager. It's the only realistic way to keep 100+ unique passwords. Generate here, store there.
- One site, one password. Breaches happen; unique passwords keep one breach from becoming all of them.
- Turn on two-factor authentication (2FA) everywhere it's offered — it's the single biggest upgrade after unique passwords.
- Prefer passphrases for master passwords. Four random words ("correct horse battery staple" style) are long, memorable, and strong — ideal for the one password you must remember: your manager's.
- Don't "clever it up." P@ssw0rd! follows patterns attackers already try. Randomness beats leetspeak.
Password Generator FAQs
Are these passwords truly random?
Yes — they're drawn from your browser's cryptographic random number generator (crypto.getRandomValues), not a predictable math formula. Each character is independently random.
Do you see or store my passwords?
No. Generation happens entirely on your device; we never receive, log, or store anything you generate.
What length should I choose?
16 characters with all types for most accounts; 20–32 for email, banking, and your password manager itself. The entropy readout tells you exactly how strong each choice is.
Why guarantee one of each character type?
Some sites require it, and it removes the tiny chance of a password missing a type entirely — with zero cost to randomness.
What are "look-alike" characters?
Characters easily confused in some fonts: capital i (I), lowercase L (l), one (1), capital O (O), zero (0). Excluding them helps when you'll type the password by hand.
Is it free?
Completely — unlimited passwords, no account, no sign-up. Passwords are generated locally and never sent anywhere.
More free tools to try
Security sorted? Generate more random goodness with the Random Username Generator, Random Word Generator, Random Letter Generator, and Random Number Generator. Browse everything on the Yes or No Wheel homepage.