What Is a Password Generator?
A password generator creates random, unpredictable passwords from a chosen mix of uppercase letters, lowercase letters, numbers, and symbols — far more secure than passwords people typically create themselves.
How to Use the Password Generator
- Set your desired password length using the slider.
- Choose which character types to include.
- A new password generates automatically — click "Generate New Password" for another.
- Click "Copy to Clipboard" to copy it.
How Password Strength Is Measured
Entropy measures how many guesses, on average, an attacker would need to crack your password through brute force. Higher entropy means exponentially more possible combinations.
Understanding Your Results
A 16-character password using all four character types (upper, lower, numbers, symbols) typically has well over 90 bits of entropy — considered very strong against brute-force attacks with current computing power. Shorter passwords or a smaller character pool reduce entropy significantly.
Password Security Best Practices
- Use at least 12–16 characters for important accounts.
- Use a unique password for every account — never reuse passwords.
- Store passwords in a reputable password manager rather than memorizing or reusing them.
- Enable two-factor authentication (2FA) wherever it's available, as an extra layer beyond the password itself.
Common Mistakes to Avoid
- Using predictable substitutions like "P@ssw0rd" — these are well known to attackers and cracking tools.
- Reusing the same password across multiple sites, so one breach compromises every account.
- Choosing short passwords for convenience — every extra character multiplies the number of possible combinations.
Frequently Asked Questions
Most security guidelines recommend at least 12–16 characters, with longer being stronger, especially for important accounts like email or banking.
Passwords are generated entirely in your browser using your device's cryptographically secure random number generator, and are never sent to or stored on any server.
Yes, where the site allows it — symbols significantly increase the character pool size, which increases entropy and makes the password harder to brute-force.
It removes easily confused characters like lowercase 'l', uppercase 'I', and the digits '1' and '0', which can be helpful if you need to type or read the password manually.
You generally shouldn't try to memorize random passwords — use a reputable password manager to generate, store, and auto-fill them securely.
Any password can theoretically be cracked given enough time and computing power, but a long, random password with a large character pool makes brute-force attacks impractically slow with current technology.