16
Strength
Very Strong
Entropy: 0 bits
About Password Generator
Our free password generator creates cryptographically secure random passwords using your browser's built-in crypto API. Every password is generated locally and never transmitted over the internet. Customize length, character types, and quantity to meet any security requirement.
Features
- Cryptographically secure random generation using window.crypto
- Adjustable length from 4 to 64 characters
- Toggle uppercase, lowercase, numbers, and symbols independently
- Real-time entropy calculation and strength meter
- Generate up to 10 passwords at once
- One-click copy to clipboard
Password Security Tips
Use a unique password for every account. Enable two-factor authentication wherever possible. Consider using a password manager to store your passwords securely. Never share passwords via email or messaging apps.
FAQ
▶ How long should my password be?
We recommend at least 12 characters for general accounts and 16+ characters for sensitive accounts like banking or email. Longer passwords are exponentially harder to crack.
▶ Are generated passwords safe?
Yes, our passwords are generated using cryptographically secure randomness (window.crypto). They are never sent to any server and exist only in your browser.
▶ What is password entropy?
Password entropy measures the randomness and unpredictability of a password, expressed in bits. Higher entropy means a stronger password. 60+ bits is good, 80+ bits is very strong.
▶ Should I use special characters?
Including special characters increases the character pool and therefore the entropy of your password. However, a long password without special characters can be stronger than a short one with them.