๐Ÿ“ฎ Japan Post Customer Barcode Generator

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Japan Post's customer barcode encodes a postal code and address number as a 4-state bar pattern, used to speed up automated sorting at mail-processing centers.

Enter a Japanese postal code and address number (block, house, and unit numbers) to generate the customer barcode Japan Post uses for automated sorting-machine reading. It can also help meet the barcode requirement for certain direct-mail postage discounts.

How to use

  1. Enter the 7-digit postal code.
  2. Continue with the address number (digits and hyphens representing block/house/unit numbers).
  3. Download the generated barcode as SVG or PNG.

How the calculation works

Generate a Japan Post customer barcode. It represents the postcode and the numbers in the street address using four kinds of bar (full, ascending, descending and a short timing bar), so sorting machines can route mail automatically. Enter the 7-digit postcode and the address numbers (block, building, room and so on) separated by hyphens (digits and hyphens only, at least 7 digits). For bulk mailings, printing the customer barcode on addresses can qualify for Japan Postโ€™s barcode discount when the conditions are met.

Worked example

Postcode 654-0123 with the address numbers 4-5-6 โ†’ enter โ€œ6540123-4-5-6โ€ The numbers from the chลme, ban and gล of the address are listed with hyphens.

Things to be aware of

  • The official rules, such as how to handle building names in letters or katakana, are set out in Japan Postโ€™s barcode manual. Follow them if you want the discount.
  • The barcode alone does not deliver the mail; always write the address and name in text too.
  • Print size and position also have rules, so check with the post office before using it for real.

FAQ

What characters are allowed?

Only digits and hyphens (-) are supported. You need at least 7 digits total, including the postal code.

What is the customer barcode?

It's a barcode standard used by Japan Post that encodes the postal code and address number as four bar heights, enabling automated sorting by mail-processing machines.

Is the barcode alone enough for delivery?

No โ€” the barcode only assists the sorting machine. Be sure to also write the destination address and name correctly on the mail piece.