Free secure password generator. Create strong random passwords with custom length, uppercase, numbers, and symbols.
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Password Generator
Free · Instant · No Signup
Formula
Formula
Password Entropy (bits) = Length × log₂(Character Set Size)
A 16-character password with all 4 character types has ~95 characters × 16 = ~104 bits of entropy. NIST recommends 80+ bits for strong passwords.
Frequently Asked Questions
How long should a password be?+
Minimum 12 characters. 16+ characters is recommended for important accounts. Longer is always better.
Should I use symbols in passwords?+
Yes. Adding symbols increases the character set from 62 to 95, dramatically increasing brute-force difficulty.
How do I remember strong passwords?+
Use a password manager (Bitwarden, 1Password, KeePass) to store and auto-fill strong unique passwords for every site.
Is this password generator secure?+
Yes, passwords are generated in your browser using Math.random(). Nothing is sent to any server. For maximum security, use a cryptographically secure generator.