🇯🇵

Japan My Number Generator

Japanese personal ID (My Number) — 12 digits with weighted mod-11 check.

Click Generate

Bulk:

⚠️ For development & testing only. Generated numbers pass format/checksum validation but are NOT registered with any government authority. Using a number to impersonate a real person or commit fraud is illegal.

About My Number

My Number (個人番号 (Kojin Bangō)) — Japanese personal ID (My Number) — 12 digits with weighted mod-11 check.

Example: 123456789018

FAQ

What is My Number?

Japan's personal ID — for tax, social security, healthcare.

Format?

12 digits, weighted mod-11 check.

Use?

Format-valid only.

BINtools API

Build it into your app

BIN lookup, card & data validation, fraud signals — one clean REST API. 500 requests/day free, no credit card required.

Get your free API key → See plans