Password Generator
Generate strong, random passwords with custom length and character set options plus a strength meter.
How to Use the Password Calculator
Set your password length, choose character types, and click Generate. Copy any password by clicking the copy icon.
Formula
Entropy = log₂(charset_size^length). A 16-character password with all character sets has ~100 bits of entropy — nearly uncrackable by brute force.
Frequently Asked Questions
How long should my password be?
For most accounts: 12+ characters. For sensitive accounts (banking, email): 16–20+ characters with all character types.
Is this generator secure?
Passwords are generated using Math.random(). For critical use, prefer a cryptographic generator. Passwords are never transmitted or stored.
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