๐ฆ SSCC-18 Shipping Container Code Generator
SSCC-18 is a GS1 Serial Shipping Container Code used to uniquely identify logistics units like pallets and cartons. The last of its 18 digits is a GS1 standard modulus-10 check digit.
Enter a 17-digit number combining an extension digit, GS1 company prefix, and serial reference, and this tool automatically computes the check digit to generate an SSCC-18 (Serial Shipping Container Code) barcode that uniquely identifies a logistics unit like a pallet or carton.
How to use
- Enter the 17-digit number combining the extension digit, GS1 company prefix, and serial reference.
- The check digit is calculated automatically to produce the 18-digit SSCC-18 barcode.
- Download the generated barcode as SVG or PNG.
How the calculation works
Generate a barcode for an SSCC (Serial Shipping Container Code), the 18-digit number identifying each individual logistics unit such as a pallet or carton. Enter 17 digits and the 18th, the check digit, is calculated and added; the result is printed as GS1-128 with AI (00). The 17 digits Extension digit (1) + GS1 company prefix + serial reference (assigned freely by the company) Check digit Multiply the digits by 3, 1, 3, 1โฆ starting from the rightmost, add them up and subtract the last digit of the total from 10 (0 if it already ends in 0).
Worked example
โ10614141123456789โ โ check digit 7 โ SSCC โ106141411234567897โ On the barcode: (00)106141411234567897 Assign one number per shipped unit and match it against the advance shipping notice (ASN) to speed up goods-in checks.
Things to be aware of
- GS1 rules say an SSCC must not be reused for a different unit for at least a year.
- Real SSCCs need a company prefix obtained from GS1.
- Shipping labels also print the same number in human-readable text.
FAQ
What is SSCC-18?
It's a GS1 standard: an 18-digit serial number that uniquely identifies an individual logistics unit (a shipping container) like a pallet or carton. It's widely used in warehouse management and shipment tracking (ASN).
Why does entering 17 digits produce an 18-digit code?
The 17 digits you enter combine the extension digit, GS1 company prefix, and serial reference. A single check digit, computed using the GS1 standard modulus-10 algorithm (alternating weights of 3 and 1), is appended to produce the full 18-digit SSCC-18.
How is this different from the GS1-128 generator?
SSCC-18 is a specific data element commonly used within GS1-128 barcodes under Application Identifier (00). This tool encodes SSCC data directly with the (00) AI prefix, dedicated to that use case.