Generate cryptographically secure passwords of any length with custom character sets. Perfect for email, banking, social media, and any online account. No login. No server. No tracking.
⚡ Uses window.crypto — cryptographically secure. Zero data stored.
Select Your Length — Use the slider to choose between 8 and 64 characters. For most web accounts, 16 characters is the "Golden Standard" for security and compatibility.
Toggle Complexity — Decide whether to include uppercase, lowercase, numbers, and symbols. We recommend keeping all options active for maximum entropy.
Generate and Verify — Click the button to create a new unique string. Our tool calculates the "Crack Time" and "Entropy Bits" to give you peace of mind.
Copy and Secure — Use the copy button and immediately paste it into your password manager. Once you close this tab, the password is gone forever.
Security experts measure strength using Entropy—a mathematical value describing unpredictability. To maximize this, a password must have sufficient length (12+ characters), high complexity (mixing 4 character types), and zero predictability (no dictionary words or patterns).
The biggest risk isn't a hacker guessing your password; it's Credential Stuffing. If a small site you used once gets breached, hackers will try those same credentials on your bank or email. Unique, generated passwords prevent this catastrophic domino effect.
A standard hacker toolkit can test billions of combinations per second. A 6-character password (lowercase only) is cracked instantly. A 12-character complex password would take an average desktop computer over 3,000 years to crack. The difference is literally life-changing.
Zero-Knowledge Architecture: This tool uses the window.crypto API to generate randomness directly in your browser. No data is sent to our servers, no logs are kept, and no passwords are ever stored.
Cybersecurity experts and organizations like NIST recommend a minimum length of 12 to 14 characters for standard accounts, and 16+ characters for highly sensitive accounts like banking, primary email, or master password managers.
Yes. Instead of using standard pseudo-random number generators (like Math.random()), our tool relies on the Web Crypto API. This generates cryptographically secure pseudo-random numbers using high-entropy hardware seeds from your operating system.
Absolutely not. We have no databases and no server-side tracking. Once you close the browser tab, the password is gone forever. You must copy it and save it in your personal password manager.
A passphrase is a string of random words (e.g., horse-battery-staple-correct). They are often easier for humans to remember while still providing massive entropy due to their extreme length. However, for maximum security where you don't need to memorize the code, a complex random character string is superior.
This tool uses Cryptographically Secure Pseudo-Random Number Generators (CSPRNG). Audited for data leakage and found to be 100% client-side. Last Security Review: May 2026.