Random PIN Generator, 4 to 12 Digits, Free and Private
Generate random PIN codes of 4 to 12 digits in your browser, one or many at once, with leading zeros kept. Cryptographically random and never sent anywhere.
About the PIN Generator
The PIN Generator produces random numeric codes of four to twelve digits, one at a time or many at once, with leading zeros kept. Use it for a phone or SIM PIN, a door or safe code, a parental control code, a one-time code for a demo, or a batch of codes for an event. The digits come from your browser's cryptographic random generator, so every code is unpredictable and every possible code is equally likely. Nothing is sent anywhere and nothing is stored.
How to generate a PIN
Steps
- PIN mode is pre-selected on this page. Choose the number of Digits, from 4 to 12. Six is the default.
- Set How many codes you want, up to a thousand for a batch.
- Choose a Separator, one code per line or comma-separated, then press Generate.
- Press Copy to copy the codes, or Generate again if you want a different set.
Privacy
The codes are generated in your browser and never leave your device. No one else sees them, and the page keeps no history, so a PIN you make here is known only to you.
Choosing a good PIN
Length
A four-digit PIN has ten thousand possibilities; a six-digit PIN has a million. Where a system allows it, six digits is a sensible minimum for anything that protects money or an account, and eight or more where the system does not lock after a few wrong attempts.
Random beats memorable
Studies of leaked PINs show that a handful of codes such as 1234, 1111, 0000 and birth years make up a large share of all PINs in use. A randomly generated code is immune to that guesswork. If a random code is hard to remember, write it down somewhere safe rather than choosing a pattern.
Leading zeros count
0042 is as valid a four-digit PIN as 9999, and leaving zeros out would make low codes rarer than they should be. This generator keeps them, so copy the code exactly as shown.
How the randomness works
The browser's crypto.getRandomValues draws from the operating system's random source, the same one used to make encryption keys. The generator maps those draws onto the range of codes with rejection sampling, which avoids the slight bias a plain remainder would introduce, so every code from all zeros to all nines has the same chance.
Common uses
- A new PIN for a phone, SIM card, bank card or voicemail.
- Door, locker, safe and alarm codes.
- Parental control and screen time codes.
- Batches of one-time codes for an event, a raffle or a test.
Related tools
For a longer secret with letters and symbols, use the Password Generator. The Random Number Generator covers numbers in any range, with unique and sorted options, and the UUID Generator makes identifiers for software.