Password Generator
Weak — too short, predictable
Medium — dictionary-based
Strong — random, 16+ chars
Generate strong, secure passwords with customizable length and character types. Includes uppercase, lowercase, numbers, and symbols.
How to Use Password Generator
- Set your desired password length (8-128 characters).
- Choose which character types to include.
- Click "Generate" to create a new password.
- Click "Copy" to copy it to your clipboard.
About Password Generation
Strong, unique passwords are your first line of defense against unauthorized access. This tool uses the Web Crypto API to generate cryptographically secure passwords entirely in your browser.
Entropy Matters More Than Complexity Rules
Password strength comes from entropy, the number of possible combinations an attacker has to try. A 16-character lowercase password has more entropy than an 8-character password with uppercase, numbers, and symbols. Those "must include one special character" rules give a false sense of security. Length is the single most important factor. Each additional character multiplies the search space exponentially.
Why 16+ Characters Matters
Modern GPUs can test billions of password hashes per second against fast algorithms like MD5 or SHA-1. An 8-character random password using all ASCII printable characters has about 52 bits of entropy, crackable in hours. At 16 characters, you're over 100 bits, which puts brute-force attacks firmly out of reach even with dedicated hardware. Always aim for 16 characters minimum for any account that matters.
Use a Password Manager
Generating strong passwords is pointless if you reuse them or write them on sticky notes. A password manager stores unique passwords for every account behind one strong master password. Bitwarden, 1Password, and KeePass are solid options. Generate a unique random password here, paste it into your password manager, and never think about it again.
The Passphrase Alternative
For passwords you need to type manually (like your master password), consider a passphrase: 4-6 random words strung together, like "correct-horse-battery-staple." A four-word passphrase from a 7,776-word list gives about 51 bits of entropy. Six words pushes it to 77 bits. Passphrases are easier to memorize and type than random character strings while still being extremely strong.
Need unique identifiers for your applications? Generate them with our UUID Generator or create custom tokens with the Random String Generator. To securely hash passwords for storage, use the Bcrypt Hash Generator.