Free Secure Password Generator
Generate strong, random passwords instantly. Everything runs in your browser — your passwords never leave your device.
Password Options
Your passwords never leave this browser
This generator uses client-side JavaScript with the Web Crypto API. No passwords are transmitted, stored, or logged. You can verify this by opening your browser's Network tab — or simply disconnecting your internet before generating.
Why use this password generator?
Built with security and privacy as the top priorities.
Cryptographically Secure
Built on the Web Crypto API (crypto.getRandomValues) — the same standard trusted by modern browsers for encryption-grade randomness.
100% Private
All generation happens locally in your browser using JavaScript. No data is uploaded, logged, or sent to any server.
Customizable
Tune length from 8 to 64 characters, choose uppercase, lowercase, numbers, symbols, or exclude ambiguous characters like I, l, 1, O, 0.
Passphrase Mode
Generate easy-to-remember but cryptographically strong passphrases made of random English words — like "correct-horse-battery-staple".
Strength Meter
Instant feedback on password entropy (bits) and estimated offline crack time, so you know exactly how strong your password is.
Free Forever
No sign-up, no ads interrupting your workflow, no paywalls. Just a clean, fast tool built to help you stay secure online.
Password Security Best Practices
- 1
Use a unique password for every account — never reuse across email, banking, or social media.
- 2
Use a password manager (Bitwarden, 1Password, or your browser's built-in manager) to store complex passwords.
- 3
Enable two-factor authentication (2FA) wherever possible — prefer authenticator apps over SMS.
- 4
Aim for at least 16 characters for important accounts, or use a 4-5 word random passphrase.
- 5
Never email, text, or share passwords in plain chat — use a password manager's secure sharing feature.
- 6
Check if your email has appeared in data breaches at haveibeenpwned.com and change affected passwords.
Frequently Asked Questions
Is this password generator safe to use?+
Yes. Every password is generated locally in your browser using the Web Crypto API — the same cryptographic standard used by modern browsers for HTTPS and encryption. Your passwords are never transmitted over the internet, logged, or stored on any server. You can even disconnect your network after the page loads and the tool will keep working.
What makes a password strong?+
A strong password has high entropy — meaning it contains many bits of unpredictable randomness. As a rule of thumb: use at least 16 characters, mix uppercase and lowercase letters, numbers, and symbols, and avoid common words or sequences. We recommend a minimum of 70 bits of entropy for important accounts. Our strength meter shows your password's entropy and estimated crack time in real time.
Should I use a random password or a passphrase?+
Both can be secure. Random passwords (e.g. "xK9#mP2$vL8q") are compact and ideal for password managers. Passphrases (e.g. "Brave-Tiger-Storm-42") are longer but easier to type or memorize. For accounts you log into frequently on multiple devices, a 4-5 word passphrase balances security and usability. For maximum security with a password manager, use a 20+ character random password.
Why shouldn't I use the same password everywhere?+
Because data breaches happen. If you reuse a password and one site is compromised, attackers immediately have access to every other account that shares that password — including email, banking, and social media. Use a unique password for every account. The easiest way to do this is with a password manager (like Bitwarden, 1Password, or your browser's built-in manager) that remembers them for you.
How often should I change my passwords?+
Current NIST guidance (SP 800-63B) recommends changing passwords only when there is evidence of compromise, not on a fixed schedule. That said, you should always change a password immediately if a service announces a breach, if you suspect your device is infected, or if you accidentally shared it. Enable two-factor authentication (2FA) wherever possible — it adds far more security than rotating passwords.
What characters should I include in a strong password?+
For maximum compatibility and strength, include lowercase letters, uppercase letters, numbers, and symbols. Some legacy systems don't accept symbols or have shorter limits, so our generator lets you customize. Avoid substituting letters with similar-looking symbols (like "p@ssw0rd") — modern crackers account for these patterns.