Password Generator

The Password Generator creates strong, truly random passwords that resist brute-force attacks and dictionary guessing. Set the length, choose your character types, and get a secure password you can drop straight into a password manager. Everything happens in your browser — your password is never sent anywhere. Free, instant, and private.

What Makes a Password Strong

A strong password has four qualities, and this tool builds in all of them:

• Length — 16+ characters; the most important factor by far.
• Randomness — no words, names, or guessable patterns.
• Variety — a mix of uppercase, lowercase, numbers, and symbols.
• Uniqueness — a different password for every single account.

How to Generate One

1. Set the length — 16 or more is recommended.
2. Pick character types — or exclude ambiguous ones for easy typing.
3. Generate and copy straight into your password manager.

The Science: Password Entropy

Security comes down to one concept — entropy, the amount of randomness in a password, measured in bits. More bits means more guesses an attacker needs, and each added bit doubles the difficulty. Here's how real passwords compare:

Length Beats Complexity

Here's the counterintuitive truth modern security guidance now emphasizes: length matters more than complexity. A 20-character all-lowercase password is about as strong as a 12-character password using every character type. For years people were forced to add symbols and numbers, but that mostly produced predictable patterns like "P@ssw0rd1" that attackers expect. The bigger win is simply making passwords longer. Variety still helps — but length helps more.

How Long Until It's Cracked?

The jump from 8 to 16 characters isn't double the security — it's astronomically more, because each character multiplies the total combinations.

True Randomness Matters

Not all "random" is equal. A secure generator uses a cryptographically secure random number generator (the browser's Web Crypto API), not the ordinary random functions that can be predictable. That cryptographic randomness is what guarantees your password has no hidden pattern an attacker could exploit — and because it runs locally, the password is never transmitted or stored.

Can't Remember It? Use a Passphrase

A long random string is unguessable but impossible to memorize — which is fine for accounts you autofill from a password manager. For the few you type by hand, a passphrase of four or more random words (like "correct-horse-battery-staple") is the answer: it's long enough to be very strong, yet far easier to remember and type than a jumble of symbols.

Password Best Practices

• Unique per account — so one breach can't unlock the rest.
• Use a password manager — memorize one master password, not a hundred.
• Enable two-factor authentication — a second layer even if a password leaks.
• Never share by email or message — and don't reuse old passwords.
• Change after a breach — act immediately if a service is compromised.

Private by Design

Your password is generated on your device and never leaves it — nothing is transmitted, logged, or stored. Generate as many as you need, free and instantly, then keep them safe in a password manager.

Password Generator FAQs

What makes a password strong?

Four things: length (16 or more characters), randomness (no words, names, or patterns), variety (a mix of character types), and uniqueness (a different password for every account). Of these, length matters most — a long random password is exponentially harder to crack than a short complex one. This generator produces passwords that meet all four criteria automatically.

How long should my password be?

Aim for at least 16 characters; modern security guidance (NIST) recommends 15 or more. For everyday accounts, 16 is excellent; for critical ones like email, banking, or your password manager, use 20 or more. Each extra character multiplies the number of possible combinations, so length is the single most powerful lever for security.

Is length or complexity more important?

Length. This surprises people, but a 20-character all-lowercase password has roughly the same strength as a 12-character password using every character type. Current guidance moved away from forcing complexity because it pushes people toward predictable patterns like 'P@ssw0rd1'. Adding symbols and numbers helps, but making a password longer helps more.

What is password entropy?

Entropy measures a password's randomness in bits — essentially how many guesses an attacker would need. It's calculated from the character pool size and length, and each added bit doubles the difficulty. For perspective, the word 'password' has about 37 bits (weak), while a random 20-character mix has over 100 bits (extremely strong). More entropy means more resistance to brute-force attacks.

Are randomly generated passwords actually safe to use here?

Yes, when generated correctly. A secure generator creates passwords in your browser using cryptographic randomness (the Web Crypto API), and the password is never transmitted to or stored on any server. Nothing leaves your device, so the only person who ever sees the password is you — making it safe to generate and paste into your accounts.

How am I supposed to remember a random password?

You're not — and that's the point. Use a password manager to store them, so you only memorize one strong master password. If you need something memorable to type by hand, a passphrase of four or more random words (like correct-horse-battery-staple) is long, strong, and far easier to recall than a random string.

What are the most important password best practices?

Use a unique password for every account so one breach doesn't compromise the rest; store them in a reputable password manager; enable two-factor authentication wherever possible; never share passwords by email or message; and change a password immediately if a service reports a breach. Avoid dictionary words and personal details like birthdays.

Why exclude ambiguous characters?

Characters like the lowercase 'l', uppercase 'I', the number '1', and 'O' versus '0' are easy to confuse when typing a password by hand, which can lock you out. Excluding them improves readability for passwords you'll type manually, at a small cost to strength that you can offset by adding length.