Password Generator
Generate strong, random passwords. Everything runs in your browser — nothing is sent to any server.
Why Use a Password Generator?
Humans are bad at creating random passwords. We tend to use familiar words, patterns, and personal information — all of which make passwords predictable and vulnerable to attack. A password generator uses cryptographic randomness to create truly unpredictable passwords that are virtually impossible to guess.
Our generator uses the Web Crypto API (crypto.getRandomValues()), the same cryptographic random number generator used by security professionals. Every password is generated entirely in your browser — nothing is ever transmitted over the network.
Tips for Strong Passwords
- Use at least 16 characters — Each additional character exponentially increases the time needed to crack your password.
- Enable all character types — Mixing uppercase, lowercase, numbers, and symbols maximizes the character set.
- Never reuse passwords — If one account is breached, attackers will try those credentials on every other service.
- Use a password manager — Tools like Bitwarden or 1Password let you store hundreds of unique passwords securely.
- Enable two-factor authentication — A strong password combined with 2FA makes your accounts extremely secure.
How Password Strength Is Measured
Password strength is measured in bits of entropy. Entropy represents the number of possible combinations an attacker would need to try. The formula is: entropy = log2(charset_size ^ length). A 16-character password using all character types (95 possible characters) has about 105 bits of entropy — far beyond what any brute-force attack can handle.
Frequently Asked Questions
Is this password generator safe to use?
Yes. The password is generated entirely in your browser using the Web Crypto API. No data is sent to any server. You can verify this by checking the network tab in your browser's developer tools.
How long should my password be?
We recommend at least 16 characters. A 16-character password with all character types would take trillions of years to crack with current technology. For maximum security, use 20+ characters.
What makes a password "Very Strong"?
Our strength indicator is based on entropy. "Very Strong" means 80+ bits of entropy, which is achieved with 12+ characters using all four character types (uppercase, lowercase, numbers, symbols).