🔐 Security
Random Password Generator
Generate strong, random passwords with your choice of length and character types. Runs entirely in your browser — nothing is stored.
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Tips for a strong password
- Use 16+ characters — length is the single biggest factor in password strength.
- Mix uppercase, lowercase, numbers and symbols to increase the character pool.
- Never reuse passwords across different sites.
- Store passwords in a password manager (e.g. Bitwarden, 1Password) rather than writing them down.
- This generator uses the browser's cryptographically secure
crypto.getRandomValues()API.
Frequently Asked Questions
Is this password generator secure?
Yes. This tool uses the browser's built-in
crypto.getRandomValues() API, which is a cryptographically secure pseudo-random number generator (CSPRNG). This is the same standard used by password managers. Generated passwords are never sent to any server.
What is a good password length?
Security experts recommend at least 16 characters for general accounts and 20+ for sensitive ones like banking or email. Length is the single biggest factor in password strength — each extra character multiplies the number of possible combinations exponentially.
Should I include symbols in my password?
Yes, if the site allows it. Adding symbols expands the character pool from 62 (letters + digits) to ~94, dramatically increasing entropy. A 16-character password with symbols has over 10× the combinations of one without symbols at the same length.
What does "entropy" mean for a password?
Entropy (measured in bits) represents how unpredictable a password is. The formula is:
bits = length × log₂(pool size). A password with 80+ bits of entropy is considered very strong — it would take billions of years to crack by brute force even with modern hardware.
Should I store generated passwords somewhere?
Never write passwords down or store them in plain text files. Use a reputable password manager such as Bitwarden (free, open-source), 1Password, or your browser's built-in password manager to store and autofill them securely.