Is this password generator safe to use?

Yes. All passwords are generated entirely in your browser using the Web Crypto API (crypto.getRandomValues). No password is ever sent to a server or stored anywhere.

How many passwords can I generate?

You can generate up to 10 passwords at once with one click, and regenerate as many times as you like. There is no limit.

What is password entropy?

Entropy measures how unpredictable a password is. Higher entropy means harder to crack. A 16-character password with all character types has over 100 bits of entropy.

Should I use a password manager?

Yes. Generate strong unique passwords here, then store them in a trusted password manager like Bitwarden, 1Password, or your browser's built-in manager.

🔐 Security Tool

Password Generator

Create strong, random passwords instantly. 100% browser-based — nothing ever leaves your device.

Click Generate to create your password…

— bits —

Length

Characters 16

4128

Character types

UppercaseA B C … Z

Lowercasea b c … z

Numbers0 1 2 … 9

Symbols! @ # $ % ^

How many

Passwords to generate

Exclude characters

Skip these

How does this password generator work?

Every password is generated using crypto.getRandomValues() — the Web Crypto API built into your browser. This is cryptographically secure randomness, not Math.random(). No password ever reaches any server.

🔒 Cryptographically secure

Uses window.crypto.getRandomValues — the same API used by password managers and security software. True randomness, not pseudo-random.

📏 Password entropy

Entropy (bits) = length × log₂(pool). A 16-char password with all types has ~105 bits of entropy — would take billions of years to brute-force.

🚫 Nothing stored

Your passwords are never sent anywhere. Everything happens in your browser tab. Close the tab and the passwords are gone.

🔑 Use a manager

Generate unique passwords here, then store them in Bitwarden, 1Password, or your browser's built-in manager. Never reuse passwords.

Frequently asked questions

Is this password generator safe?

Yes. All passwords are generated in your browser using crypto.getRandomValues — the Web Crypto API. Nothing is sent to any server. Your passwords are completely private.

What makes a password strong?

At least 16 characters, mixing uppercase, lowercase, numbers and symbols. Avoid dictionary words or personal info. Our strength meter shows entropy in bits — aim for 80+ bits.

Why exclude ambiguous characters?

Characters like 0 (zero), O (capital-o), l (lowercase-L), and 1 (one) look similar in many fonts. Excluding them makes passwords easier to type manually without mistakes.

How long should my password be?

16+ characters for most accounts. 24+ for email, banking, and password managers. Longer is always better — the generator supports up to 128 characters.

What is entropy in passwords?

Entropy measures how unpredictable a password is. Calculated as: length × log₂(character pool size). 80+ bits = strong, 100+ bits = very strong, 128+ bits = overkill-proof.