How to Generate a Secure Password Online for Free
Weak passwords are the leading cause of account breaches. A strong password is long, random, and unique per account — but humans are terrible at generating randomness. This guide shows you how to create cryptographically secure passwords instantly using a free browser-based tool that never transmits your passwords anywhere.
What Makes a Password Secure?
- Length — every extra character multiplies the number of possible combinations exponentially. 16 characters is the practical minimum for important accounts.
- Character variety — mixing uppercase, lowercase, numbers, and symbols increases the search space from 26 to 95 characters per position.
- True randomness — human-chosen patterns (keyboard walks, names, dates) are predictable.
crypto.getRandomValues()provides cryptographic randomness. - Uniqueness — reusing passwords means one breach exposes all accounts. Use a password manager to store unique passwords.
Step-by-Step Instructions
Open the Password Generator
Navigate to the free Password Generator. It runs entirely in your browser — generated passwords are never sent to any server.
Set the password length
Drag the slider to at least 16 characters. For high-value accounts (email, banking, work), use 20–32 characters. Longer is always better.
Select character sets
Enable all four options: uppercase (A–Z), lowercase (a–z), numbers (0–9), and symbols (!@#$%^&*). If a site restricts symbols, disable just that option.
Click Generate
The tool uses your browser's Web Crypto API (crypto.getRandomValues()) to generate a truly random password. Click Generate as many times as you like — each result is fresh.
Copy and store in a password manager
Click Copy to copy the password to your clipboard. Paste it into your password manager (Bitwarden, 1Password, etc.) and the site's registration or reset field.
Common Use Cases
- New account signup: Generate a unique password before creating any new online account
- Password reset: Replace a weak or reused password after a security notice
- System credentials: Generate service account passwords, database passwords, or SSH key passphrases
- API keys and secrets: Create random tokens for app configuration or environment variables
Generate a secure password now
Cryptographically random, 100% browser-based — your passwords never leave your device.
Open Password Generator