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Generate strong, random passwords instantly with this free online password generator. Customize length, character types, and exclude confusing characters. Uses your browser’s cryptographically secure random generator — passwords are never sent anywhere.
On this page
How to Use This Password Generator#
- Adjust the length slider (12+ characters recommended)
- Toggle uppercase, lowercase, numbers, and symbols
- Optionally exclude similar characters (i, l, 1, L, o, 0, O) for easier typing
- Click the copy button to grab your new password
What Makes a Strong Password?#
Password strength is measured in entropy (bits of randomness). The more bits, the longer it takes to crack by brute force.
- Length matters most — each added character exponentially increases cracking time
- Character variety — mixing cases, numbers, and symbols enlarges the search space
- Randomness — avoid dictionary words, names, and predictable patterns
- Uniqueness — never reuse passwords across accounts
Password Strength Benchmarks#
- < 40 bits — Weak, crackable in seconds to hours
- 40–60 bits — Fair, suitable for low-value accounts
- 60–80 bits — Strong, resistant to offline attacks
- 80+ bits — Very strong, effectively uncrackable today
Security Best Practices#
- Use a password manager to store unique passwords for every account
- Enable two-factor authentication (2FA) wherever possible
- Use a hardware security key for your most important accounts
- Change passwords immediately if a service reports a breach
Privacy#
This generator uses the Web Crypto API (crypto.getRandomValues) built into your browser — the same secure randomness used for encryption. Passwords are generated entirely on your device and never transmitted or stored anywhere.
Recommended Reading#
Level up your security and privacy knowledge:
- YubiKey 5 NFC Security Key — essential reading for hardware two-factor authentication
- Sandworm — essential reading for understanding modern cyber threats
- The Art of Invisibility — essential reading for online privacy and security
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