Password Generator

About this tool

This password generator builds random passwords entirely in your browser using the Web Crypto API, the same cryptographic randomness source browsers use for secure connections. Nothing you generate is ever sent to a server, logged, or stored — close the tab and the password exists only where you pasted it.

Pick a length from 8 to 64 characters, toggle uppercase letters, lowercase letters, numbers, and symbols, and the strength meter estimates entropy as you adjust. Press the space bar to generate a fresh one instantly.

When to use it

• Creating a new account and the site doesn't offer a suggested password.
• Rotating a password after a breach notification, when you want something genuinely random rather than a variation of the old one.
• Generating one-off credentials for Wi-Fi networks, shared tools, or temporary accounts.

How strong is strong enough?

A 16-character password using all four character sets draws from roughly 90 symbols per position, which works out to about 104 bits of entropy. At a trillion guesses per second, exhausting that space would take longer than the age of the universe. For most accounts, 16 characters with all sets enabled is more than enough; for a password manager master password or disk encryption, consider 20 or more.

Frequently asked questions

Are the passwords generated here safe to use?

Yes. Generation happens locally in your browser with crypto.getRandomValues(), a cryptographically secure random source. The password never leaves your device — this page makes no network request with your generated password.

What length should I choose?

16 characters with uppercase, lowercase, numbers, and symbols enabled is a solid default for online accounts. Go longer (20+) for anything protecting other credentials, like a password manager or email account, since those are recovery paths to everything else.

Should I include symbols if a site rejects them?

Some sites restrict which characters they accept. If a password is rejected, turn off the symbols toggle and compensate by increasing length — a 20-character alphanumeric password is stronger than a 14-character one with symbols.

Is it better to use a passphrase instead?

Passphrases (several random words) are easier to memorize and fine for passwords you type often. For passwords stored in a manager and pasted, random character strings like these pack more entropy into fewer characters.