Utilz
Password Generator
Generate strong, secure passwords instantly
Why Use This Tool?
- Generate cryptographically secure passwords using your browser's built-in crypto.getRandomValues().
- Customize length, character types, and generate up to 20 passwords at once.
- No passwords are stored or sent anywhere -- everything stays on your device.
How It Works
Password entropy is calculated as log₂(charset_size ^ length). A password using 95 printable ASCII characters with 16 characters has approximately 105 bits of entropy. Higher entropy means exponentially more guesses needed for brute-force attacks.
How to Use
- Set the desired password length (8-128 characters)
- Toggle character types: uppercase, lowercase, numbers, special characters
- Set the number of passwords to generate (1-20)
- Click Generate to create passwords, then copy with one click
FAQ
Are these passwords truly random?
Yes, this tool uses crypto.getRandomValues(), a cryptographically secure random number generator built into your browser. No passwords are sent to any server.
What makes a strong password?
A strong password is at least 12 characters long and includes a mix of uppercase letters, lowercase letters, numbers, and special characters. Avoid using personal information or common words.
Are my generated passwords stored anywhere?
No. All passwords are generated entirely in your browser and are never sent to or stored on any server. Once you close or refresh the page, they are gone.
How long should my password be?
At least 12 characters is recommended. For sensitive accounts, 16 or more characters provides significantly better protection against brute-force attacks.
How long should a password be for maximum security?
A password of 16+ characters with mixed uppercase, lowercase, numbers, and symbols is considered very strong. Even 12 characters is good if all character types are included.