PIN Code Generator

How to use

1. 1Pick a PIN length with the slider, the number input, or one of the five presets (4 digits for a bank card, 5 for voicemail, 6 for phone unlock, 7 for a door code, 8 for a strong PIN).
2. 2Leave Skip weak patterns on (default) to reject leaked PINs, sequences, repeats, dates, and keypad lines. Turn it off only if you want to see what the unfiltered output looks like.
3. 3Optionally turn on No adjacent repeats for a stricter rule (rejects values like 1123 or 4455) or No leading zero if the receiving system strips leading zeros.
4. 4Set How many to generate one to twenty PINs at a time, then click Generate PINs.
5. 5Each result is shown in large monospace with a status chip: green for pass, amber if a weak pattern slipped through with the filter off. Use the Copy button on a single PIN or Copy all for the whole batch.
6. 6Use Clear list to wipe the result panel, and the strength bar and bits estimate at the top to compare lengths before committing to a PIN.

About this tool

PIN Code Generator builds random numeric PINs from 3 to 12 digits using the browser's crypto.getRandomValues, which is the same uniform cryptographic source banks and password managers use. Every candidate is filtered through a stack of weak-pattern checks before it appears on screen, so the output avoids the values an attacker would try first. The filters reject the well-known leaked 4 digit PINs (1234, 1111, 0000, 1212, 7777, 2580 keypad line), the analogous 6 digit leaked PINs (123456, 121212, 654321, 159753), all-same-digit values, ascending and descending sequences, alternating two-digit pairs (1212, 121212), palindromes (1221, 1234321), 4 digit year shapes in the 1900 to 2099 range that match birthdays, mmdd and ddmm date shapes, mmddyy / ddmmyy / yymmdd 6 digit dates, telephone keypad straight lines, and long runs of identical or sequential digits inside a longer PIN. Two stricter optional filters are available: No adjacent repeats rejects any PIN that contains two of the same digit in a row (1123, 4455), and No leading zero is useful when the PIN will be stored in a system that strips leading zeros. Pick a length manually with the slider, the number input, or the five one-click presets that label the most common use cases (4 digits for a bank card, 5 for a voicemail box, 6 for a phone unlock, 7 for a door keypad, 8 for a strong PIN). Generate a batch of one to twenty PINs at once. Each result is shown in large monospace type with a status chip: green when it passes every filter, amber with the specific reason if a weak pattern slipped through (only possible when weak-pattern filtering is off). The header shows the entropy in bits, a strength meter, and a one-line interpretation of what that length means in practice. The number of combinations and a context note explain why a 4 digit PIN is safe on a card reader (a few attempts before lockout) but not safe in a system without throttling. Copy buttons drop a single PIN or the entire batch to your clipboard. Everything runs locally in your browser. No PIN is uploaded, logged, stored, or transmitted.

Free to use. Works in your browser. No signup, no login.