Flexport.org, the impact division of the global shipping platform Flexport, offers a carbon emissions calculator to aid businesses in creating more sustainable supply chains by facilitating the calculation of carbon emissions from shipment data in real-time. This tool, accredited by the Smart Freight Centre and adhering to the GLEC Framework, enables any company to track and analyze their shipping carbon footprint, even if they do not use Flexport's services. The calculator employs Mapbox APIs to accurately estimate emissions by calculating realistic truck routes, rather than relying on straight-line distances. Flexport.org's mission extends beyond transparency; it encourages companies to optimize for emissions reduction alongside cost and speed considerations, offering insights into the impact of shipping method changes and consolidation. Additionally, partnerships with GoodShipping and Carbonfund.org provide options for using sustainable biofuels and purchasing carbon offsets, respectively. As more companies, like Cotopaxi, participate in Flexport's offset program, they take proactive steps in managing their carbon responsibilities, supported by the availability of emissions data through Flexport's platform or via API for non-users.