Password Generator
Generate strong, cryptographically random passwords in seconds. Choose your length and character set, then copy with one click.
Why Use a Strong Password?
Weak or reused passwords are the leading cause of account compromises. A strong, unique password for every account is your first line of defense against hacking, credential stuffing, and brute-force attacks.
Our generator uses crypto.getRandomValues() — the browser's cryptographically secure random number generator (CSPRNG) — to ensure every password is truly random and unpredictable. Your passwords are never sent to any server.
How Strong Are These Passwords?
Password strength is measured in bits of entropy — more bits means more possible combinations:
- 8 chars, lowercase only: ~37 bits (~200 billion combinations) — crackable in seconds
- 12 chars, mixed: ~71 bits — crackable in years with dedicated hardware
- 16 chars, mixed + symbols: ~95 bits — effectively uncrackable
- 20 chars, mixed + symbols: ~119 bits — quantum-safe for the foreseeable future
Password Security Best Practices
- Use at least 16 characters for all accounts, longer for high-value ones
- Use a unique password for every account — never reuse passwords
- Store passwords in a password manager (Bitwarden, 1Password, KeePass)
- Enable two-factor authentication (2FA) on every account that supports it
- Never share passwords via email, SMS, or unencrypted messages
Is This Generator Safe?
Yes. Passwords are generated entirely in your browser using the crypto.getRandomValues()Web Crypto API — the same API used by password managers and security applications. No network request is made, no data is logged, and you can even use this tool offline after the page loads.
Frequently Asked Questions
Is this password generator secure?
Yes. Passwords are generated using the Web Crypto API (crypto.getRandomValues()), which uses cryptographically secure pseudorandom number generation (CSPRNG). This is the same source of randomness used by security-critical applications. Your password is generated entirely in your browser and is never sent to any server.
How long should my password be?
For most accounts, 16 characters is a strong minimum. For high-value accounts (banking, email, master password), use 20+ characters. A 16-character password with uppercase, lowercase, numbers, and symbols has over 10^28 possible combinations — making brute-force attacks computationally infeasible.
Should I include symbols in my password?
Yes, if the service allows it. Adding symbols significantly increases the password's entropy (randomness). A 16-character password using only lowercase letters has about 10^22 combinations; adding symbols increases this to over 10^29.
What makes a password strong?
A strong password is: at least 12-16 characters long, random (not based on words or personal information), unique to each account, and uses a mix of character types (upper, lower, digits, symbols). Using a password manager to store unique passwords for every account is the best practice.
Should I use a password manager?
Yes. Password managers (like Bitwarden, 1Password, or KeePass) let you generate and store a unique strong password for every account without memorizing them. This is far safer than reusing passwords across sites. Use this generator to create passwords, then store them in your password manager.