Random PIN Generator
Free random PIN generator — 4 to 12 digit PINs from a cryptographic random source, skipping the trivial patterns (1234, repeats, runs, dates) that dominate real-world PIN data. Runs locally in your browser.
Runs entirely in your browser — nothing you enter is uploaded or stored.
Generating a PIN worth using
A PIN is a password drawn from a ten-character alphabet, which makes it weak per digit and entirely dependent on the system rate-limiting attempts. Four digits is 10,000 possibilities: trivial to exhaust offline in microseconds, and perfectly sound against a cash machine that swallows the card on the third try.
The patterns that matter
Analyses of leaked PIN datasets consistently find the same clustering — 1234 alone accounts for around 10% of four-digit PINs, and the top twenty cover roughly a quarter of them. Dates are the other large cluster, which is why anything shaped like a year or a day-month pair is worth avoiding even though it looks arbitrary. With avoid trivial patterns enabled, the generator rejects and redraws rather than handing you one of those.
Frequently asked questions
Why does the tool reject some PINs?
With "avoid trivial" on it rejects the patterns that dominate real-world PIN datasets — 1234, 0000, repeated digits, straight runs up or down, and date-shaped values like 1987 or 0304. Roughly a quarter of all four-digit PINs people choose fall into a handful of these, so an attacker with three attempts tries them first.
How strong is a 4-digit PIN really?
About 13 bits — 10,000 possibilities. That is nothing against an offline attack and perfectly adequate against a card reader that eats the card after three wrong tries. A PIN is only ever as strong as the lockout policy behind it, which is why the same 4 digits are fine on a bank card and useless as a file password.
Should I use 6 digits instead of 4?
If the system allows it, yes — it is a hundredfold increase for two more keypresses. Phones moved to 6 by default for this reason. Beyond about 8 digits you are better off with a passphrase, since you will write it down.
Is the PIN generated on a server?
No. It comes from a cryptographic random source in a WebAssembly module running in this page. Nothing is transmitted.