Secure Password Generator

About This Password Generator

This free password generator creates strong, random passwords that are practically impossible to guess. It runs entirely in your browser, so no password is ever sent to a server. Whether you're securing a new email account, a banking login, or a work portal, it generates passwords that satisfy the rules of most websites.

Most people use weak passwords: pet names, birthdates, or the same password across every site. That's how accounts get compromised. This tool solves that problem by generating genuinely random passwords with your browser's cryptographically secure random number generator.

How to Use

1. Adjust the password length using the slider (16 characters is a good default)
2. Choose which character types to include (uppercase, lowercase, numbers, symbols). Every type you select appears at least once.
3. Optionally avoid look-alike characters such as 0, O, 1, l, and I if you will type the password by hand
4. Click "Generate Password" for a new one, or just change a setting, since the password updates automatically
5. Click the copy button to copy it to your clipboard

Why Use This Tool?

• Cryptographically secure: Uses your browser's built-incrypto.getRandomValues, not Math.random().
• Customizable: Choose length (4–64) and character types.
• Strength in bits: The meter shows the entropy of the password, not just a guess based on what characters it contains.
• Bulk generation: Generate 5 passwords at once for multiple accounts.
• Privacy first: Passwords are created on your device and are not stored or sent by this tool.
• Free with no limits: Generate as many passwords as you need.

What Makes a Strong Password?

• Length: At least 12 characters, ideally 16 or more
• Randomness: No words, names, dates, or patterns
• Variety: Mixing uppercase, lowercase, numbers, and symbols enlarges the pool of characters
• Uniqueness: Never reuse a password across sites

Length matters most. Each extra character multiplies the number of possible passwords by the size of the character pool. With all four character types (88 characters), four more characters make a password about 60 million times harder to guess.

Common Use Cases

1. Creating New Account Passwords

For every new account (email, social media, banking, streaming), generate a unique password. Store it in a password manager such as Bitwarden or 1Password, or in your browser's built-in manager. Never reuse passwords across sites.

2. Replacing Weak Passwords

If you're still using "password123" or your dog's name, it's time to change. Generate a strong random password and update the account. Do this for your most important accounts first (email, banking).

3. Wi-Fi Network Passwords

A strong Wi-Fi password protects your whole home network. Use 20 random characters and turn on "Avoid look-alike characters" so it is easy to type on other devices. Wi-Fi passphrases must be between 8 and 63 characters, so keep the length at 63 or below.

4. App Secrets and Database Passwords

Developers need strong random values for database passwords and app secrets. If the value goes into a URL or a .env file, turn off symbols, because characters like #, $, and & can need escaping. For cryptographic keys, use your platform's key tooling instead of a typed password.

5. Temporary Access Codes

For temporary shared credentials (a guest Wi-Fi password, a shared account for a team, a one-time login), use a random password and share it through a secure channel.

6. Password Strength Training

If you're teaching someone about password security, generate a few passwords of different lengths and character combinations and watch how the strength in bits changes as you add length.

Strength at Different Lengths

This is how the strength meter rates a random password that uses all four character types:

Every extra bit doubles the number of guesses needed. How fast an attacker can guess also depends on how the website stores passwords, so a unique password for every site matters as much as the length.

Password Security Best Practices

• Use a password manager: It's the only practical way to have unique passwords for every site.
• Never reuse passwords: If one site is breached, reused passwords expose every other account.
• Enable two-factor authentication (2FA): Even a strong password isn't enough on its own.
• Change passwords after breaches: If a site you use announces a breach, change that password immediately.
• Don't share passwords over email or SMS: Use a password manager's sharing feature or an encrypted channel instead.

Frequently Asked Questions

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