JAN/EAN Barcode Check Digit Calculator

JAN/EAN Code Verification

JAN code (Japanese Article Number) is a product identification code used in Japan, known internationally as EAN code. It consists of 8 digits (JAN-8) or 13 digits (JAN-13), with the last digit being the check digit.

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About JAN/EAN Barcodes

History

JAN (Japanese Article Number) was introduced in 1978 as Japan's implementation of the EAN barcode standard.

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Structure & Format

JAN codes exist in 8-digit (JAN-8) and 13-digit (JAN-13) formats, with country prefix 49 for Japan.

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Check Digit Formula

The check digit is calculated using a Modulo 10 algorithm with alternate weighting of 3 and 1.

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JAN vs EAN

JAN is functionally identical to EAN, with JAN-13 using the country prefix 49 (Japan).

Differences between JAN and EAN →