Password Generator
Generate strong, secure passwords with customizable length, character types, and entropy estimation. Create passwords for accounts, APIs, and encryption keys instantly.
How to Use the Password Generator
Set your desired password length using the slider (4 to 128 characters), select which character types to include (lowercase, uppercase, numbers, symbols), and click Generate. The tool creates cryptographically secure passwords using the Web Crypto API. The entropy indicator shows password strength in bits — aim for 80+ bits for strong security and 128+ bits for critical systems like encryption keys.
What Makes a Password Strong?
Password strengthdepends on two factors: length and character pool size. A 12-character password using only lowercase letters has about 56 bits of entropy, while the same length with all character types reaches 79 bits. Every additional character multiplies the possible combinations exponentially. Modern security guidelines from NIST recommend at least 16 characters for general accounts. For maximum security, enable all character types and use 20+ characters. The "Exclude ambiguous characters" option removes visually similar characters like 0/O, 1/l/I that can cause confusion when typing passwords manually.
Common Use Cases
Generate unique passwords for online accounts, databases, API keys, Wi-Fi networks, andencryption keys. Verify password hashes with our Hash Generator. Create batch passwords for team onboarding or user provisioning. Need unique identifiers instead? Try our UUID Generator for cryptographically secure IDs. All generation happens entirely in your browser using crypto.getRandomValues() — the same cryptographic random number generator used by security-critical applications. Nothing is stored or transmitted. Close the tab and the passwords are gone forever.