Calculate, verify, and generate GS1 compliant barcodes for product packaging, outer cartons, and logistics pallets. Essential for industrial inkjet printing (BestCode, Zanasi) and retail packaging compliance.
Choose the GS1 data structure you need to generate or verify.
Type the raw digits (without the final check digit, or enter the full code to verify an existing barcode).
Customize barcode dimensions for continuous inkjet coders (CIJ), thermal inkjet (TIJ), or label printers.
Your barcode check digit is calculated according to the official GS1 modulo 10 algorithm.
This calculator generates GS1 compliant check digits and vector barcodes for packaging design and inkjet printing. It does not issue or allocate GS1 company prefixes. Official GTIN numbers must be registered through GS1. Mega Standard accepts no liability for barcode rejection due to unassigned company prefixes or improper print substrate contrast.
Check digits are calculated using the standard GS1 Modulo 10 algorithm with alternating weights of 3 and 1 right-to-left. Vector SVG barcodes generated here are free to download and print.
Every GS1 GTIN (GTIN-8, GTIN-12, GTIN-13, GTIN-14) and SSCC code ends with a single check digit. This digit is calculated using a Modulo 10 algorithm to catch 99% of data entry and scanner reading errors.
(10 - (Sum mod 10)) mod 10.Given company and product digits: 629110000000
Positions (R-to-L): 0 0 0 0 0 0 0 1 1 9 2 6 Weights: 3 1 3 1 3 1 3 1 3 1 3 1 Products: 0+ 0+ 0+ 0+ 0+ 0+ 0+ 1+ 3+ 9+ 6+ 6 = 25 Next multiple of 10 = 30 Check digit = 30 − 25 = 5 Complete GTIN-13 = 6291100000005
If a barcode scanner reads a single digit incorrectly, the weighted sum fails the Modulo 10 check, preventing wrong products from being scanned at retail checkout or warehouse dispatch.
They are the same thing. EAN-13 is the traditional name for the 13-digit retail barcode format, which is defined under the global GTIN (Global Trade Item Number) data structure as GTIN-13.
No. Official GS1 company prefixes must be obtained directly from GS1. Once you have your assigned prefix, this tool calculates the exact check digits and generates SVG vector barcodes.
Yes! The generated barcode is rendered as a clean vector SVG image which can be downloaded and imported directly into Adobe Illustrator, CorelDraw, or barcode printing software.
Mega Standard supplies BestCode continuous inkjet (CIJ) printers and Zanasi high-resolution coders in Kirkuk, Erbil, Baghdad, and Basra for high-speed barcode printing directly onto products and packaging.
We are the authorized supplier for BestCode (USA) CIJ printers and Zanasi (Italy) industrial coders across Iraq. Print sharp 1D/2D barcodes, expiry dates, and lot numbers on bottles, cables, cartons, and plastic.