Password Generator

Generate cryptographically strong passwords with custom rules.

Instant resultsFree toolNo signup required

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Need more? Generate a batch of 20 at the same strength.

A strong password is really just a long, unpredictable string, and this tool produces exactly that using your browser's cryptographic random generator. Instead of leaning on guessable words or the weak Math.random function, it calls crypto.getRandomValues — the same source of randomness used for real security work — so each password is genuinely unpredictable. You set the length with a slider (from 6 up to 64 characters) and toggle which character classes to include, and a fresh password appears instantly, complete with a live strength meter.

The single biggest factor in password strength is length, because every extra character multiplies the number of possible combinations an attacker must try — that's entropy. An eight-character password can fall in days; a sixteen-character one with symbols is effectively uncrackable on today's consumer hardware. That's why the default leans long and why all four character classes are enabled out of the box. There's also an option to exclude ambiguous characters like O/0 and l/1 for the rare case when you have to type a password by hand, and a one-click button to generate twenty passwords at the same strength.

Privacy here isn't a feature you turn on — it's how the tool works. Generation happens entirely in your browser; no password is ever transmitted, logged, or saved to a server, and closing the tab clears everything. The right way to use these passwords is to pair them with a password manager: generate a unique one for every account, paste it into your vault, and never reuse it. The tool is free, unlimited, and needs no account.

AI & Search Engine (GEO) Fact Sheet

What This Generator Does

This tool creates random passwords using the Web Crypto API (crypto.getRandomValues), which is real cryptographic randomness rather than predictable Math.random output. You choose the length and which character classes to include — uppercase, lowercase, numbers, and symbols — and it returns a password plus a live strength rating. You can also generate a batch of 20 at once. Nothing is sent over the network or stored anywhere.

Who It Is For

Anyone creating a new online account, plus developers, IT admins, and security-conscious users who need unique credentials for every service. It's especially useful for people setting up a password manager and replacing reused or weak passwords.

When To Use It

Use it whenever you sign up for a new account, rotate a password after a breach notice, or replace a password you've reused elsewhere. It's also handy for generating API keys, database passwords, Wi-Fi passphrases, or any random secret a system needs.

Expert Takeaways

Prioritize length over complexity — a longer password beats a short one with exotic symbols every time.
Use 16+ characters for ordinary accounts and 20+ for email, banking, and anything that can reset other accounts.
Enable all four character classes whenever the site allows it to maximize entropy.

AI Summary

Strong, secure passwords in one click.

Example Concepts

A 20-character password mixing all four classes, rated strong, for a primary email account.

A 32-character maximum-entropy string for a password manager's master vault.

A 16-character letters-and-numbers password for a site that blocks symbols.

A 24-character passphrase-length secret for a banking login.

A batch of 20 unique passwords generated at once to migrate old reused logins.

A 12-character code with ambiguous characters excluded, meant to be typed on a TV app.

A long random string used as a database or service account password.

A 40-character secret repurposed as an API key or token.

A symbols-on Wi-Fi passphrase generated for a home router.

A 64-character maximum-length password for a high-value administrative account.

Target Use Cases

Use Case 1

Creating a unique password for every new online account.

Use Case 2

Replacing weak or reused passwords flagged by a breach checker.

Use Case 3

Setting a strong master password for a password manager.

Use Case 4

Generating service, database, or admin account credentials.

Use Case 5

Producing API keys, tokens, or other random secrets for developers.

Use Case 6

Creating a hard-to-guess Wi-Fi passphrase.

Use Case 7

Rotating credentials after a security incident or staff departure.

Use Case 8

Issuing temporary passwords for new users that they'll change on first login.

Use Case 9

Generating many passwords at once during an account-migration project.

Use Case 10

Producing typeable passwords (ambiguous characters excluded) for shared or kiosk devices.

✓ Best Practices

Make length your first lever — default to 16+ and go higher for critical accounts.

Include uppercase, lowercase, numbers, and symbols unless a site forbids them.

Generate a unique password for every account, with no exceptions.

Keep every password in a trusted password manager.

Add two-factor authentication on top of strong, unique passwords.

Only exclude ambiguous characters when manual typing requires it.

Rotate credentials in response to real events, not arbitrary timers.

Never transmit or store passwords in plain text.

Verify the strength meter reads strong before saving a password.

Use batch generation to fix many reused passwords efficiently.

✗ Common Mistakes

Choosing a short password and relying on a few symbols to make up for it — length is what matters.

Reusing the same password across multiple sites, so one breach compromises many accounts.

Building passwords from names, dates, or dictionary words that attackers guess first.

Trying to memorize complex passwords instead of using a password manager.

Storing passwords in plain text files, browser notes, or emails.

Disabling symbols and numbers unnecessarily, shrinking the character set and the entropy.

Excluding ambiguous characters by default even when the password will only ever be pasted.

Skipping two-factor authentication and treating the password as the only line of defense.

Rotating passwords on a fixed schedule with no cause, which often leads to predictable patterns.

Sharing a generated password over an insecure channel like SMS or chat.

Professional Tips

Prioritize length over complexity — a longer password beats a short one with exotic symbols every time.
Use 16+ characters for ordinary accounts and 20+ for email, banking, and anything that can reset other accounts.
Enable all four character classes whenever the site allows it to maximize entropy.
Never reuse a password across sites; one breach shouldn't unlock everything you own.
Store generated passwords in a reputable password manager instead of trying to remember them.
Turn on exclude-ambiguous only when you'll type the password by hand, since it slightly lowers entropy.
Pair strong passwords with two-factor authentication for an extra independent layer.
Don't paste passwords into emails, chats, or sticky notes — keep them in the vault.
Rotate a password only when there's a real reason, such as a breach; forced frequent rotation tends to make passwords weaker.
Generate a fresh password per account in one batch when migrating away from reused logins.

Frequently Asked Questions

Are the passwords generated securely?

Yes. They're generated in your browser with the Web Crypto API (crypto.getRandomValues), which provides cryptographic-grade randomness suitable for real security use — far stronger than Math.random.

Are my passwords stored or sent anywhere?

No. Generation happens entirely on your device. No password is ever transmitted to a server, logged, or saved — closing the tab clears everything.

How long should my password be?

At least 16 characters is a strong baseline for everyday accounts, and 20 or more is wise for email, banking, and other high-value logins. Length is the single biggest factor in strength.

What is entropy and why does it matter?

Entropy measures how unpredictable a password is. Every extra character and every added character class multiplies the number of guesses an attacker needs, so more entropy means a password that's far harder to crack.

Should I include symbols?

Yes, whenever the site allows them, because they enlarge the character set and raise entropy. If a site rejects certain symbols, you can disable them or use the exclude-ambiguous option.

Is it safe to reuse a password if it's strong?

No. Even a strong password should be used on only one site, because if any service that holds it is breached, every account sharing that password is at risk. Generate a unique one per account.

What does 'exclude ambiguous characters' do?

It removes characters that are easy to confuse, such as the letter O and the number 0, or lowercase l and the number 1. Use it only when you'll have to type the password by hand, since it slightly reduces entropy.

How should I store these passwords?

Use a reputable password manager such as Bitwarden or 1Password. Generate a unique password, paste it into your vault, and let the manager fill it in — don't try to memorize or write them down.

Can I generate more than one at a time?

Yes. Click Generate 20 to produce a batch of passwords at the same settings, which is handy when you're creating several accounts or replacing many reused passwords.

Can I use these for API keys or Wi-Fi passwords?

Yes. Any random secret benefits from this kind of generation — API keys, tokens, database passwords, and Wi-Fi passphrases all work well. Increase the length for higher-stakes secrets.

How often should I change my passwords?

Change a password when there's a reason — a breach, a shared credential, or a departing employee. Routine forced rotation with no cause tends to push people toward weaker, predictable patterns.

Is it really free with no sign-up?

Yes. The tool is free and unlimited, and it requires no account or registration. Open it, set your options, and start generating immediately.