Password Generator
Generate strong, random passwords with customizable length, character sets, and strength meter.
How to Generate a Strong Password
Use the length slider to set your desired password length (8 to 128 characters), then toggle the character sets you want: uppercase letters, lowercase letters, numbers, and symbols. You can also exclude visually ambiguous characters like 0/O and l/1/I. The password regenerates automatically whenever you change an option, and a strength meter shows the rating from weak to very strong with color coding. The entropy value tells you exactly how many bits of randomness the password contains. Click Copy to grab it for your password manager.
What Makes a Password Strong?
Password strength is primarily determined by entropy — the amount of randomness. A 16-character password using uppercase, lowercase, numbers, and symbols has roughly 105 bits of entropy, which would take billions of years to crack with current technology. Longer passwords with diverse character sets are exponentially harder to guess. This generator uses your browser's crypto.getRandomValues() function, which provides cryptographically secure randomness. No passwords are generated on or sent to a server, so your newly created credentials stay entirely on your device.