PIN generator
Get a random numeric PIN with no lazy patterns — no 1234, no repeated digits, no birthday. Every digit is drawn from your device's secure random source, right here in the page.
A PIN protects far less than a password — for logins, prefer a full password or passphrase.
How to pick a good PIN
Choose the length
Four digits is the common default, but six is far tougher and only slightly harder to recall. If the device allows it, longer is always better.
Filter out patterns
Switch on the filters to block runs like 123 and repeated digits like 44. Those are the first combinations a shoulder-surfer or thief will try.
Generate and memorize
Regenerate until one is easy for you to remember but means nothing to anyone else — then never write it on the card it protects.
Why let a tool choose your PIN
People are predictable
Studies of leaked PINs show a huge share are dates, 1234, or 0000. Anything you invent from memory tends to fall into a pattern a thief can guess in a few tries. Random removes that habit.
Even odds for every digit
The generator uses rejection sampling on top of the Web Crypto API, so each digit is uniformly likely — no subtle lean toward certain numbers that a naive random routine can introduce.
Stays on your device
The PIN is created in the page and never sent anywhere. No logs, no history, nothing to leak. Close the tab and it is gone.
Understanding PIN security
A PIN is a short numeric secret, so its strength is modest by nature. A four-digit PIN has exactly ten thousand combinations — about 13 bits of entropy — which sounds small, and it is. The reason PINs remain safe on phones and bank cards is not their length but the systems around them: after a few wrong tries the device locks, wipes, or forces a long wait.
Length changes everything
Because each digit multiplies the possibilities by ten, moving from four digits to six turns ten thousand combinations into a million, and eight digits reaches a hundred million. If a system lets you set a longer PIN, take it — the extra digits cost you almost nothing to remember but multiply an attacker's work enormously.
Avoid the obvious
Sequences (1234, 2580 straight down the keypad), repeated digits, years, and dates make up a startling fraction of real PINs. The filters here strip those patterns out so your code does not land among the first guesses. Never derive a PIN from a birthday, address, or phone number an attacker could look up.
Where PINs make sense
PINs are ideal for phone unlock, SIM cards, door locks, and card payments — places with hardware limits on guessing. They are a poor fit for online accounts, where an attacker can try millions of guesses. For those, generate a proper password or passphrase instead.
Frequently asked questions
How many digits should my PIN have?
Use as many as the device allows. Four digits is the bare minimum and offers only ten thousand combinations. Six digits is a big step up to a million, and it is barely harder to remember. For anything valuable, choose six or more.
Is a randomly generated PIN really safer?
Yes. Most people unconsciously pick dates, repeats, or keypad patterns, and attackers know the common ones. A random PIN with pattern filters on avoids those predictable choices, so it will not be among the handful a thief tries first.
What do the filters actually do?
"No adjacent repeats" prevents two identical digits in a row, and "no runs" blocks ascending or descending sequences of three or more like 123 or 321. Both trade a sliver of the total combinations for a code that avoids the most guessable patterns.
Is my PIN sent anywhere?
No. It is generated entirely in your browser with the Web Crypto API and never transmitted or stored. You can turn off your connection before generating one and it will still work.
Can I use this for a bank card or phone?
Yes — that is exactly what it is for. Generate the PIN, memorize it, and change it on the device or card as usual. Do not store it next to the thing it unlocks.
What does the bits figure mean?
Bits of entropy measure how many equally likely codes exist. A four-digit PIN is about 13.3 bits, or ten thousand codes. Each extra digit adds roughly 3.3 bits and multiplies the possibilities by ten.