⚙️ Encryption & Security
Secure Password Generator — Create Strong Passwords
Generate cryptographically secure passwords with customizable length, character sets, and complexity. All generation happens locally in your browser.
Secure Password Generator
Generate cryptographically secure passwords using your browser's built-in random number generator.
Select at least one character type
8128
How is this password generated?
This tool uses crypto.getRandomValues(), the Web Crypto API's cryptographically secure pseudorandom number generator (CSPRNG). No passwords are stored, transmitted, or logged. Everything runs entirely in your browser.
- Entropy is calculated as log2(pool_size) x length
- 80+ bits of entropy is considered very strong
- Crack time assumes a modern GPU cluster (10 billion guesses/sec)
- Longer passwords with diverse character types are always stronger
❓ Frequently Asked Questions
How long should my password be?+
At least 16 characters for important accounts. Every additional character exponentially increases the time needed to crack it. A 20+ character password with mixed characters is virtually uncrackable by brute force.
Is this password generator secure?+
Yes. It uses the Web Crypto API (crypto.getRandomValues), the same cryptographic random number generator used by security software. All generation happens locally — no passwords are sent to any server.
Should I use a passphrase or random characters?+
Both work. A random passphrase (4-6 random words) is easier to remember. Random characters are shorter but harder to memorize. Use a password manager to store either type.