Password Generator — Free Tool

What Is a Password Generator?

A password generator creates random, cryptographically secure passwords that are virtually impossible to guess or brute-force. This tool uses your browser's built-in crypto.getRandomValues() API to generate true randomness — no server calls, no logging, no tracking. Every password is created locally on your device and never leaves your browser.

Why You Need Strong Passwords

Weak passwords are the leading cause of security breaches. Common passwords like "123456" and "password" can be cracked in under one second. A 16-character password mixing uppercase, lowercase, numbers, and symbols would take billions of years to crack with current computing power. This tool makes generating those strong passwords effortless.

How to Use This Password Generator

Set the password length — Choose the length — 16+ characters is recommended for strong passwords. The longer, the better.
Select character types — Toggle uppercase, lowercase, numbers, and symbols. Include all four types for maximum security.
Exclude ambiguous characters — Optionally exclude easily confused characters like 0/O, 1/l/I for passwords that need to be typed manually.
Generate and copy — Click Generate for a new password. Click Copy to save it to your clipboard — then store it in a password manager.

Tips and Best Practices

→ Use a password manager. Don't try to memorize generated passwords. Use a password manager (1Password, Bitwarden, KeePass) to store them securely.
→ 16+ characters is the modern minimum. With current computing power, 12-character passwords are crackable with dedicated hardware. 16+ characters with all character types provides strong protection.
→ Never reuse passwords. If one account is breached, reused passwords expose all your other accounts. Generate a unique password for every service.
→ Enable two-factor authentication. Even the strongest password is vulnerable to phishing. Add 2FA (TOTP, hardware key, or push notification) for critical accounts — email, banking, and social media.

Frequently Asked Questions

How long should a strong password be?

Security experts recommend at least 12-16 characters. Each additional character exponentially increases the time needed for a brute-force attack. A 16-character password with mixed character types would take billions of years to crack.

What makes a password strong?

A strong password combines uppercase letters, lowercase letters, numbers, and special characters. It avoids dictionary words, personal information, and common patterns like 123456 or qwerty.

Is it safe to use an online password generator?

Yes, if it runs entirely in your browser like this one. This tool generates passwords locally using your browser's cryptographic random number generator — nothing is sent to any server, and no passwords are stored or logged.

How long should a strong password be?+

Security experts recommend at least 16 characters with a mix of uppercase, lowercase, numbers, and symbols. At this length, brute-force attacks are computationally infeasible with current technology. Shorter passwords (8–12 characters) can be cracked in hours to days with modern GPU clusters.

Are random passwords more secure than passphrases?+

Both can be equally secure depending on length and randomness. A random 16-character password and a 4-word passphrase (like 'correct horse battery staple') offer comparable entropy. Passphrases are easier to type and remember; random passwords are harder to guess even with dictionary attacks.

How are passwords stored securely?+

Passwords should never be stored in plain text. They're hashed (converted to a fixed-length digest using algorithms like bcrypt, Argon2, or PBKDF2) with a unique salt per password. When you log in, your input is hashed and compared to the stored hash. Even if the database is stolen, the original passwords can't be recovered.

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Built by Derek Giordano · Part of Ultimate Design Tools

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