A random PIN generator that avoids the codes thieves try first
The Random PIN Generator creates numeric PIN codes for bank cards, phone lock screens, door keypads, safes, voicemail, SIM cards and app passcodes. Choose 4, 6, 8 or any length from 3 to 32 digits, generate one PIN or a batch of up to 100, and copy or download the result.
The digits come from your browser’s cryptographic random number generator, not a predictable formula. With Avoid weak PINs switched on, the generator also throws away codes people choose far too often — 1234, 0000, 1111, 2580, years like 1987 and date-like numbers — so you never end up with a “random” PIN that happens to be the first one an attacker would guess.
There is also a checker for a PIN you already have in mind: it tells you whether the code follows a known weak pattern, without sending anything anywhere.
How to use the Random PIN Generator
- Choose a PIN length: 4, 6, 8 or Custom (3–32 digits).
- Set How many PINs — 1 for personal use, more for issuing codes to a group.
- Leave Avoid weak PINs ticked unless you deliberately want pure unfiltered randomness; tick No repeated digits if your device requires it.
- Press Generate PIN. Tick Hide PINs until revealed first if someone can see your screen.
- Press Copy, memorise the PIN, and store it only in a password manager if you must write it down.
Random PIN Generator features
Cryptographic randomness
Every digit comes from crypto.getRandomValues with rejection sampling, giving each of the 10,000 (4-digit) or 1,000,000 (6-digit) codes an equal chance before filtering.
Weak-pattern filter
Rejects repeated digits, ascending and descending runs, repeated pairs, keypad lines such as 2580 and 1478, years 1900–2039, MMDD/DDMM and DDMMYY dates, and the most common PINs seen in breach data.
No repeated digits
Deals digits like cards from a shuffled deck, for devices or policies that forbid repeats.
Batch and export
Generate up to 100 unique PINs at once and copy or download them as a text file.
Hide and reveal
Mask the PIN on screen until you press Reveal — handy in public places.
PIN checker
Test any PIN against the same rules to see which pattern makes it weak.
Why “random” PINs still need a filter
A 4-digit PIN has 10,000 possibilities, so a truly random one is fine against blind guessing — especially when a card is blocked after three attempts. The problem is that an attacker does not guess blindly. Analyses of millions of leaked passcodes (the best known is the DataGenetics study of 3.4 million 4-digit PINs) found that 1234 alone accounted for close to 11% of all PINs, the top 20 covered more than a quarter, and anything starting with 19 was almost certainly a birth year.
A random generator can produce 1234 or 1990 just as easily as any other code. Filtering those out costs very little — fewer than 10% of 4-digit codes are removed — and guarantees your PIN is not in the first few hundred an attacker would try.
How many digits do you need?
| Length | Combinations | Typical use | Notes |
|---|---|---|---|
| 4 digits | 10,000 | ATM and debit cards, SIM PIN, older phone locks | Safe only with a lockout (3–5 attempts). Indian and most European cards use 4. |
| 6 digits | 1,000,000 | iPhone and Android passcodes, UPI PIN, banking apps, 2FA codes | Apple’s default since iOS 9; UPI requires 4 or 6. |
| 8 digits | 100,000,000 | Door and alarm keypads, safes, corporate devices | Hard to brute-force even with slow lockouts; still memorable. |
| 10+ digits | 10 billion+ | Where a device allows a long numeric passcode | Consider a proper password or passphrase instead. |
PIN best practices
- Use a different PIN for each card and device. A skimmer that learns one should not open everything.
- Never use dates, years, phone-number fragments or house numbers. They are the first guesses for anyone who knows you, and public on social media.
- Cover the keypad at ATMs and shops; hidden cameras and shoulder-surfing beat any random PIN.
- Change the PIN immediately if a card is lost or you suspect it was seen.
- Prefer 6 digits where allowed — 100 times more combinations for two extra taps.
- For accounts rather than keypads, a PIN is not enough: use the Password Generator or Passphrase Generator, and test existing passwords with the Password Strength Checker.
Random PIN Generator FAQ
Is the random PIN generator secure?
Yes. PINs are generated on your device with the Web Crypto API, the same random source browsers use for encryption keys. Nothing is transmitted or stored, and the page does not keep a history of generated PINs.
What does “Avoid weak PINs” remove?
Codes with all digits the same (1111), sequences up or down including steps of two (1234, 4321, 2468), repeated pairs (1212), keypad lines (2580, 1478, 1397), 4-digit codes that look like years from 1900 to 2039 or MMDD/DDMM dates, 6- and 8-digit codes that look like dates of birth, and a list of the most common PINs from breach analyses.
What is the most common 4-digit PIN?
1234, by a wide margin — around one in nine PINs in the DataGenetics analysis. It was followed by 1111, 0000, 1212 and 7777. The generator never produces any of them while the weak-PIN filter is on.
Can I generate a 6-digit PIN for my phone or UPI?
Yes. Choose 6 under PIN length. UPI accepts 4- or 6-digit PINs depending on your bank, and iPhone and most Android phones default to 6 digits.
Does the tool remember or send my PIN?
No. There is no history, no storage and no network request. Once you leave the page the PIN exists only where you copied it.
Is a random PIN better than one I choose myself?
Almost always. People pick memorable patterns, and attackers know them. A random PIN with the weak filter is as strong as a numeric code can be — then your job is to memorise it and keep it private.