What PIN length should I use?
Six digits is a good baseline. If your system supports it, longer PINs improve security.
Security
PIN Generator
Create random PIN codes for device access, banking apps, and verification systems. Configure the length and choose whether all digits must be unique.
Generated output
Set PIN length and click Generate to create a PIN code.
How it works
Each digit is independently selected using crypto.getRandomValues for cryptographically strong randomness, drawing from 0–9. In standard mode, digits can repeat, giving the full 10^n possible combinations for an n-digit PIN. In unique-digits mode, the generator builds a shuffled pool of digits 0–9 using a Fisher-Yates shuffle, then takes the first n digits — guaranteeing no repeated digits. Note: unique mode is capped at 10 digits because there are only ten distinct digits available.
Practical example
You need an 8-digit PIN for a temporary access token. Set length to 8 and leave unique digits off to allow all possible combinations. The result might be "74823961". For a more structured PIN that avoids repeated digits, enable unique mode with 6 digits — for example "394817".
Frequently asked questions
Answers to common questions about this generator and how it works.
What does unique digits only do?
It prevents repeated numbers in the same PIN. This can improve readability and satisfy stricter policies.
Is this generated locally?
Yes. PIN generation runs in your browser and is not sent to your server for creation.
Can I create a 4-digit PIN?
Yes. Set length to 4 for classic keypad systems.
Can unique mode use 12 digits?
No. Unique mode can only use up to 10 digits because there are only ten unique numbers from 0 to 9.
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