Strong Password Generator
Create secure, random passwords instantly with our free online password tool. All generation happens in your browser—completely private and secure.
Character Types
Advanced Options
Our strong password generator creates cryptographically secure passwords using your browser's built-in random number generator. Whether you need a strong password generator 16 characters long or a 32 character password generator for maximum security, our tool gives you complete control over length and character types. No passwords are ever transmitted or stored—your security is our priority.
Key Features
100% Client-Side
All password generation happens in your browser. We never see, store, or transmit your passwords.
Cryptographically Secure
Uses Web Crypto API for true randomness, not predictable pseudo-random algorithms.
Instant & Fast
Generate passwords in milliseconds with no server delays or rate limits.
Strength Meter
Real-time entropy calculation shows exactly how secure your password is.
Fully Customizable
Control length (8-64 chars), character types, and advanced options like excluding similar characters.
Saved Preferences
Your settings are saved locally so you can quickly generate passwords with your preferred options.
How to Use
- 1Choose your password length using the slider or number input (8-64 characters).
- 2Select character types: uppercase, lowercase, numbers, and symbols.
- 3Configure advanced options like excluding similar or ambiguous characters.
- 4Click "Generate New Password" to create a secure password instantly.
- 5Copy to clipboard and use it for your account. Store it in a password manager for safekeeping.
Why Strong Passwords Matter
Weak passwords are the #1 cause of account breaches. Hackers use automated tools to try millions of password combinations per second through brute force and dictionary attacks. A strong, random password makes these attacks computationally infeasible.
Our secure password maker ensures your passwords have high entropy—a measure of unpredictability. A 16-character password with mixed character types has over 100 bits of entropy, making it virtually uncrackable with current technology. Learn more about password entropy and why length matters more than complexity.
Technical Details
Algorithm: Our random password creator uses the Web Crypto API'scrypto.getRandomValues() method, which provides cryptographically strong random values. This is far superior to JavaScript's Math.random(), which is predictable and unsuitable for security purposes.
Entropy Calculation: Entropy is calculated as log₂(charset_size^length). For example, a 16-character password using all 94 printable ASCII characters has approximately 105 bits of entropy.
Privacy Guarantee: All password generation happens entirely in your browser using client-side JavaScript. No data is sent to our servers. We don't log, track, or store any generated passwords. You can verify this by checking our privacy policy or inspecting the network tab in your browser's developer tools.
No Storage: Generated passwords exist only in your browser's memory and clipboard. Once you navigate away or close the tab, they're gone forever. Your preference settings (length, character types) are saved to localStorage for convenience but never include actual passwords.
Password Security Best Practices
- ✓Use a password manager like Bitwarden, 1Password, or LastPass to store your passwords securely. Read our guide on choosing a password manager.
- ✓Never reuse passwords across multiple sites. If one site is breached, all your accounts become vulnerable. Learn how to create unique passwords for every site.
- ✓Aim for at least 16 characters. Longer passwords are exponentially harder to crack. Check out our analysis: Why 16 is a great baseline.
- ✓Enable two-factor authentication (2FA) wherever possible. Combine it with strong passwords for maximum security. Read about the 2FA + strong password power combo.
- ✓Change passwords if breached. Use services like Have I Been Pwned to check if your accounts have been compromised. Learn about password rotation best practices.
- ✓Avoid common patterns like "Password123" or keyboard walks. See common mistakes in self-made passwords.
Perfect For
Developers
Generate secure passwords for API keys, database credentials, and environment variables. Check out our developer-specific guide.
IT Administrators
Create strong passwords for user accounts and system access. See our enterprise policy templates.
Students & Educators
Protect your academic accounts and personal information with strong, unique passwords for each service.
Everyone Else
Whether you're securing social media, banking, or email accounts, strong passwords are essential for everyone online.
Start Creating Secure Passwords Today
Don't leave your online security to chance. Use our strong password generator to create uncrackable passwords in seconds. It's free, fast, and completely private.