PIN Code Generator
Generate random PIN codes from 4 to 12 digits. Avoid weak patterns like 1234 or 0000. Cryptographically secure, runs in your browser.
Reference
How does the PIN generator work?
This tool generates each digit independently using crypto.getRandomValues() with a bias-elimination loop so every digit (0-9) has exactly equal probability. The "avoid weak patterns" option rejects sequential PINs (1234, 4321), repeating digits (1111), and the most-used PINs from public breaches (1234, 0000, 1111, 1212).
PIN length and security
- 4 digits — 10,000 combinations. Standard for ATM and SIM cards. Crackable with 3+ attempts allowed.
- 6 digits — 1 million combinations. Standard for iOS/Android lock screens.
- 8-12 digits — 100M-1T combinations. Used for higher-security banking and 2FA backup codes.
Common uses
- SIM unlock codes — replace the default PIN with a random one.
- Door entry codes — provision keypads for offices or short-term rentals.
- Backup codes — pre-generate a list of 2FA recovery PINs.
- Test fixtures — populate PIN columns in development databases.
Privacy
All PINs are generated 100% in your browser. No data is sent to any server.