Password generator

Passwords are generated locally with crypto.getRandomValues. util.work does not see them.

Generated password

Entropy: 128.5 bits — Excellent (alphabet size 86)

Options

What this password tool does

This page generates random passwords in your browser using crypto.getRandomValues. Pick your character sets and length, and the tool reports the entropy of the result in bits.

Reading the entropy

Entropy in bits estimates how many guesses an attacker would need on average to find your password by brute force. Roughly: 60 bits is good for online services with rate limiting, 80+ bits is strong, 128 bits is excellent.

Tips

Prefer length over complexity: a 24-character lowercase password is stronger than a 10-character symbol-heavy one and is easier to type. Always store passwords in a password manager rather than reusing them.