Generate cryptographically secure, random passwords instantly. Customize length, character types, and quantity. Your passwords are never sent to any server — all generation happens in your browser.
Uses Web Crypto API for truly random, secure passwords
Set any length from 8 to 128 characters for your needs
Toggle uppercase, lowercase, numbers, and symbols independently
Visual strength indicator shows Weak / Fair / Good / Strong / Very Strong
One-click copy to clipboard — no manual selection needed
View your last 5 generated passwords without regenerating
Use the slider to set your desired password length (minimum 12 recommended).
Toggle uppercase, lowercase, numbers, and symbols on or off.
Hit Generate Password to create a cryptographically random password.
Verify the strength meter shows "Strong" or "Very Strong."
Click Copy to save it to your clipboard before closing.
In 2024, data breaches exposed over 10 billion credentials globally. The most commonly breached passwords are not "123456" or "password" anymore — they're weak passwords that were reused across multiple services. When hackers obtain your password from one breach, they automatically try it on hundreds of other sites (credential stuffing attacks). This is why password uniqueness is just as important as password strength.
Our password generator uses the browser's built-in crypto.getRandomValues() API — the same cryptographic standard used in banking applications, VPN software, and security tools. This produces truly random passwords that cannot be predicted, not even by us. Your passwords are generated locally and never leave your device.
| Password Type | Example | Time to Crack* |
|---|---|---|
| 6 lowercase letters | qwerty | Instantly |
| 8 mixed case + numbers | Tr0ub4dor | Hours to days |
| 12 mixed (all types) | K!x9mP@vL2#n | Centuries |
| 16 mixed (all types) | Kx#9mP@vL2!nQr7$ | Billions of years |
| 20+ mixed (all types) | rP7!nK@m2Lx#qV9$dW4^ | Longer than the universe's age |
*Assuming 100 billion guesses per second (state-level attacker). Most attackers are significantly slower.
This tool uses crypto.getRandomValues(), a Web Cryptography API that generates cryptographically strong random numbers using the operating system's entropy pool. This is different from Math.random(), which is a pseudo-random number generator that can be predicted. Cryptographic randomness is the gold standard for password generation and cannot be reverse-engineered or predicted.
Each character in your generated password is independently selected from the chosen character pool using this cryptographic entropy source. For a 16-character password using all 4 character types (95 possible characters), there are 95^16 = roughly 44 quadrillion trillion possible combinations — completely out of reach for any current or near-future computer system.
No. Passwords are generated entirely in your browser using JavaScript's crypto.getRandomValues() API. Nothing is sent to our servers, logged, or stored anywhere. Your passwords remain 100% private and never leave your device.
At least 12 characters for standard accounts and 16–20+ characters for sensitive accounts like banking, email, and social media. A 20-character password using all character types has more possible combinations than atoms in the observable universe — practically impossible to crack.
Strong passwords have four properties: length (12+ characters), complexity (mix of all character types), unpredictability (random, not based on words or dates), and uniqueness (one password per account). This generator satisfies all four criteria using cryptographic randomness.
Yes, absolutely. Since strong passwords are impossible to memorize, a password manager (Bitwarden is free and open-source; 1Password and Dashlane are premium options) stores them securely and auto-fills them. You only need to remember one strong master password. This is the approach recommended by NIST and cybersecurity experts worldwide.
When symbols are enabled, this generator uses: !@#$%^&*()_+-=[]{}|;:,.<>? — these are widely supported across most websites. If a specific site rejects certain symbols, simply regenerate — each new password has a different random combination of characters.
Set your desired password length (8–128 characters). Toggle which character sets to include: uppercase letters, lowercase letters, numbers, and special symbols. Click Generate to create a cryptographically random password. Use the Copy button for one-click clipboard access. Check the strength meter to ensure your password is Strong or Very Strong.
Weak passwords are involved in 81% of data breaches. Most people reuse passwords across sites — a single breach exposes all their accounts. A truly random 16-character password with mixed character types would take a modern computer millions of years to crack. Password strength isn't about being memorable; it's about being random.
Weak (avoid): Under 8 characters, dictionary words, common patterns (123456, password). Fair: 8–10 random characters, one character type. Good: 12+ characters, multiple character types. Strong: 14–16 characters, all character types. Very Strong: 20+ characters, all types, cryptographically generated. Recommended minimum: 12 characters for regular accounts, 16+ for email, banking, and work.