{"id":15975,"date":"2026-09-02T18:00:37","date_gmt":"2026-09-02T16:00:37","guid":{"rendered":"https:\/\/gs1.se\/support\/how-do-i-calculate-the-check-digit\/"},"modified":"2026-09-02T18:00:37","modified_gmt":"2026-09-02T16:00:37","slug":"how-do-i-calculate-the-check-digit","status":"publish","type":"support","link":"https:\/\/gs1.se\/en\/support\/how-do-i-calculate-the-check-digit\/","title":{"rendered":"How do I calculate the check digit?"},"content":{"rendered":"<p>1. Go to the <a href=\"https:\/\/gs1.se\/en\/standards-and-services\/check-digit-calculator\/\" target=\"_blank\">Check Digit Calculator<\/a><\/p>\n<p>2. Enter your GS1 key without check digit, i.e. the GS1 Company Prefix and a sequence number.<\/p>\n<p><\/p>\n<p>If you are a GS1 Sweden customer, you can log in to MyGS1 and use our service Generate numbers, where you can generate several <a href=\"https:\/\/gs1.se\/en\/guides\/how-to-guides\/gtin-13\/\">GTIN-13<\/a> at the same time. The service also lets you generate <a href=\"https:\/\/gs1.se\/en\/guides\/how-to-guides\/gtin-14\/\">GTIN-14<\/a>, <a href=\"https:\/\/gs1.se\/en\/standards-and-services\/global-location-number-gln\/\">GLN<\/a>, <a href=\"https:\/\/gs1.se\/en\/standards-and-services\/serial-shipping-container-code-sscc\/\">SSCC<\/a> and <a href=\"https:\/\/gs1.se\/en\/standards-and-services\/global-shipment-identification-number-gsin\/\">GSIN<\/a>, based on your GS1 Company Prefix.<\/p>\n<p><\/p>\n<p><img decoding=\"async\" src=\"https:\/\/s3-eu-central-1.amazonaws.com\/euc-cdn.freshdesk.com\/data\/helpdesk\/attachments\/production\/79085670725\/original\/2IfOiCZXKIZ2EHJ7Omo9E9sumQqEU-Q8zg.png?1788357788\" style=\"width: 645px;max-width: 100%\"><\/p>\n<p><\/p>\n<p><strong>You must keep track of the numbers you use as this is not registered with us.<\/strong> You can save your numbers by registering your products with the <a href=\"https:\/\/gs1.se\/en\/guides\/how-to-guides\/my-products-in-mygs1\/\" target=\"_blank\">My Products<\/a> function in <a href=\"https:\/\/my.gs1.se\/en\/\" target=\"_blank\">MyGS1<\/a>. You can also find the tool <a href=\"https:\/\/gs1.se\/en\/guides\/how-to-guides\/generate-numbers-in-mygs1\/\" target=\"_blank\">Generate Numbers<\/a> in MyGS1, which helps you to find available numbers in your number series.<\/p>\n","protected":false},"featured_media":0,"template":"","support_categories":[158,159,234,233],"support_tags":[],"class_list":["post-15975","support","type-support","status-publish","hentry","support_categories-berakna-kontrollsiffra","support_categories-berakna-kontrollsiffra-sv","support_categories-calculate-check-digit","support_categories-check-digit"],"acf":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO Premium plugin v27.8 (Yoast SEO v27.8) - https:\/\/yoast.com\/product\/yoast-seo-premium-wordpress\/ -->\n<title>How do I calculate the check digit? &#187; GS1 Sweden<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/gs1.se\/en\/support\/how-do-i-calculate-the-check-digit\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"How do I calculate the check digit?\" \/>\n<meta property=\"og:description\" content=\"1. 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