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Secure Password Generator Online

The password is generated directly in your browser using the Web Crypto API — it is never sent to a server or stored anywhere. Strength is measured by entropy: the number of bits required to brute-force the password.

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Very strong
Entropy: 103 bits · Charset size: 88
Password length16
Password is generated locally via crypto.getRandomValues — never sent to a server or stored anywhere.

Frequently asked questions

Is it safe to generate a password online?

Yes, as long as generation happens in the browser without any server requests. This tool uses the Web Crypto API (crypto.getRandomValues) — the standard for cryptographically secure random numbers. The password is never stored anywhere.

What is password entropy?

Entropy is a measure of password randomness in bits, calculated as log2(character set size) × password length. 60 bits is sufficient for most websites, 80+ bits for banking accounts, and 100+ bits provides maximum protection.

How many characters should a password have?

At a minimum, 12 characters with mixed-case letters and digits. For critical accounts — 16+ characters including special symbols. Using a password manager is preferable to memorizing complex combinations.

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