PIN Generator
Generate a random numeric PIN for device unlocks, temporary codes and MFA backup entry, with the length you need.
Digits are chosen locally with the Web Crypto API and never reach our servers.
No value yet. Press Regenerate.
This is an estimate based on random generation, not on whether a leaked password has been reused.
Generated locally in your browser. Nothing is sent to our servers, logged or stored.
When to use a PIN
A PIN is a short numeric code, convenient to enter on a keypad or phone. Its small alphabet of ten digits makes it weak for anything important: a 6 digit PIN has only a million combinations, which is trivial without rate limiting.
Use a PIN as a secondary factor or a temporary code, not as a master secret. Where a PIN guards access, the system should rate limit and lock out repeated guesses.
Best practices
- Use 6 digits or more, and avoid birthdays, repeats and obvious patterns.
- Treat a PIN as a second factor, not as your main password.
- Rely on rate limiting and lockouts wherever a PIN protects access.
More secret generators
Every generator below is the same local, Web Crypto powered tool, preset for a different job. Nothing you generate leaves your browser.
- Secure Password GeneratorPasswords, secrets, tokens and PINs in one place.
- OpenSSL Rand Generatoropenssl rand style base64 and hex secrets.
- JWT Secret GeneratorStrong HS256 signing secrets for JWT.
- API Key GeneratorOpaque, high entropy keys for API auth.
- Random Token GeneratorSession, reset and verification tokens.
- Passphrase GeneratorMemorable multi word passphrases.
Frequently asked questions
Is a PIN secure?
Only modestly. With ten digits per position, a 4 digit PIN has 10,000 combinations and a 6 digit PIN a million. Use one as a second factor with rate limiting, not as a master secret.
How long should a PIN be?
Prefer 6 digits or more. Longer is better, but a PIN is still a low entropy secret, so its security depends on the system limiting guesses.
Are these PINs random?
Yes. Each digit is drawn with crypto.getRandomValues using rejection sampling, so there is no bias toward any digit, unlike Math.random.
Can I use this for MFA backup codes?
You can generate numeric codes here, but true MFA backup codes are usually longer alphanumeric single use codes. For those, use the token or secret mode instead.