How many possible PINs are there for a given length?

Exactly 10 to the power of the length, since each digit is an independent, uniform choice from 0-9. That's 10,000 for 4 digits, 1,000,000 for 6 digits, and 1,000,000,000,000 for 12 digits.

Is a longer PIN always safer?

Only against unlimited guessing. Once an attempt limit is in place — the lockout after a few wrong tries that most cards and devices use — the limit does far more work than another digit. The PIN generator and lockout policy calculator answer two different questions.

PIN Generator

Generate a random numeric PIN between 4 and 12 digits, for a device lock, card, or entry code. Generated locally in your browser using the Web Crypto API. It is never sent to a server, never logged, and never included in analytics. A PIN is a small keyspace by nature — its safety comes from an attempt limit elsewhere, not from the digits alone.

Generated entirely in your browser using the Web Crypto API. Nothing you generate here is ever sent to a server, logged, or included in analytics.

PIN length

Between 4 and 12 digits

Your PIN will appear here.

What this generator does

Produces a numeric PIN of the length you choose, for door codes, card PINs and anywhere only digits are accepted.

How to use this tool

Choose a PIN length between 4 and 12 digits.
Generate, then copy your PIN with one tap.

Understanding the controls

Length: Each extra digit multiplies the possibilities by ten. A four-digit PIN has ten thousand possibilities, which sounds like a lot and is not — it is why banks limit attempts rather than relying on the PIN alone.

Worked examples

A card or door-entry PIN: 4 digits — 10,000 possibilities. Only acceptable because the card or door also limits how many wrong attempts are allowed before it locks out.
A device passcode with no lockout limit set: 6 digits or more — a million-plus possibilities, a sensible floor when nothing else is throttling guesses.

Common use cases

Setting a new device or app PIN
Generating a temporary access code
Replacing an easily guessed PIN

How this generator works

Each digit is drawn independently and uniformly from 0-9 using your browser's Web Crypto random generator, then joined in order — so a PIN can start with 0 and repeated digits are entirely normal, not a flaw. Every digit is equally likely and knowing one tells you nothing about the next: a 4-digit PIN has exactly 10,000 equally likely outcomes, a 6-digit one a million, and each extra digit multiplies the space by ten rather than adding to it.

Limitations and good to know

A PIN is weak by nature and only safe where something else limits guessing, such as a card lockout after three attempts. Never reuse a PIN across a door code and a bank card.
This is not a random selection from a service's actual PIN blocklist — many systems reject obvious PINs like 0000 or 1234, and this generator can produce them like any other value.

Privacy and your data

Generated in your browser and never transmitted. The value is not written to storage, never placed in the page address, and never included in analytics — the analytics layer rejects any field named like a secret outright.

Frequently asked questions

How many possible PINs are there for a given length?: Exactly 10 to the power of the length, since each digit is an independent, uniform choice from 0-9. That's 10,000 for 4 digits, 1,000,000 for 6 digits, and 1,000,000,000,000 for 12 digits.
Is a longer PIN always safer?: Only against unlimited guessing. Once an attempt limit is in place — the lockout after a few wrong tries that most cards and devices use — the limit does far more work than another digit. The PIN generator and lockout policy calculator answer two different questions.