PIN Generator
People choose PINs badly: 1234, birthdays and repeated digits make up a large share of all PINs in use. Generate random PINs of 4 to 12 digits instead, with filters that reject sequences, repeated patterns, the most common PINs and numbers that look like dates. Each digit comes from your browser’s cryptographic random generator.
- Runs in your browser
- No sign-up
- Free to use
Generated with your browser’s cryptographic random generator. Nothing is sent or stored.
How to use PIN Generator
- Choose the number of digits and how many PINs you want.
- Keep the filters on to avoid predictable PINs.
- Generate and pick one.
- Memorise it and close the page; nothing is kept.
PIN Generator features
4 to 12 digits
Card, phone, alarm and door code lengths.
Cryptographic randomness
Unbiased digits from crypto.getRandomValues.
Avoids sequences
1234, 9876, 2468 and similar runs.
Avoids repeats
1111, 1212, 123123 and triple digits.
Avoids common and date-like PINs
The most popular PINs, years and day-month combinations.
Private
Nothing is sent or stored.
When to use PIN Generator
- Setting a new bank card PIN.
- Choosing a phone or SIM PIN.
- Creating door, alarm or locker codes.
- Assigning initial PINs to devices or users.
PIN Generator FAQ
Is a 4-digit PIN secure?
Only where attempts are limited. A card that locks after three wrong tries gives an attacker a 3-in-10,000 chance with a random PIN, but a much higher chance if the PIN is a common one.
Why avoid date-like PINs?
Birthdays and years are among the most common PIN choices, and someone who finds your wallet may find your date of birth too.
Do the filters weaken the PIN?
They remove a small share of possible values, which barely changes the odds, while removing the values attackers try first.
How many digits should I use?
Use six or more where the system allows; each extra digit multiplies the possibilities by ten.
Is the PIN stored anywhere?
No. It is generated in your browser and exists only until you close the page.
Can I use a PIN instead of a password?
Only on devices that limit attempts in hardware, such as phones and cards. For online accounts use a long password.
Why random PINs matter
Analyses of leaked and surveyed PINs show how concentrated human choices are. A handful of four-digit codes, 1234, 1111, 0000 and a few more, account for a large share of all PINs, and years and dates make up much of the rest. An attacker who tries the most popular choices first succeeds far more often than one choosing at random.
Random PINs remove that advantage. With every digit chosen by a cryptographic generator, each four-digit PIN is one of ten thousand equally likely values, and each extra digit multiplies the possibilities by ten. The filters on this page go further and reject the values attackers try first, even if chance produced them.
PIN security relies on limited attempts. A card that blocks after three wrong entries, or a phone that slows down guesses, makes even four digits workable. Where attempts are not limited, for example a numeric password on a website, a PIN is far too short and a proper password is needed.
Memorise the PIN and do not write it next to the card or device. If you need to keep it, store it in a password manager. Change the PIN if you suspect someone has seen you enter it.