Password Generator & Strength Checker

Free Password Generator & Strength Checker

Weak, reused passwords are still one of the most common causes of account breaches. This tool generates strong, random passwords using your browser's built-in cryptographic random number generator, and lets you test how strong any password is — both run entirely on your device, with nothing ever sent to a server.

How to use it

• Adjust the length slider and character-type checkboxes, then click Generate password.
• Use Generate 5 more to get a quick batch to choose from.
• Paste an existing password into the checker to see its estimated strength and crack-time.
• Copy your chosen password directly and store it in a password manager rather than reusing it elsewhere.

Password best practices

• Use at least 12–16 characters with a mix of uppercase, lowercase, numbers, and symbols.
• Never reuse the same password across multiple accounts.
• Avoid dictionary words, names, and predictable patterns like "123456" or "password".
• Use a password manager to generate and store unique passwords for every account.
• Enable two-factor authentication wherever it's available, in addition to a strong password.

Frequently asked questions