This research presents the Global Carbon Accounting Tool (GCAT) developed by the Sustainable Systems & Solutions Lab (S3-Lab) at Istanbul Sehir University, Turkey. This tool is able to capture the regional and global carbon footprints of manufacturing supply chains for world's 40 major economies. The GCAT will enable users to conduct carbon footprint analysis for a specific industry of selected country in 5 steps (http://s3-lab.sehir.edu.tr/gcat.html). The European food and drink industry will be chosen as a case study to conduct supply chain-based carbon footprint analyses including production versus consumption based analysis, sector breakdown for supply chain components, scope-based analysis and impact-by-country analysis for supply chain carbon emissions.