Agricultural production systems are a key contributor to global greenhouse gas (GHG) emissions. Agrecalc is an independent, evidence-based carbon footprint tool able to identify and measure the main sources of carbon emissions, monitor improvements, and benchmark key performance indicators for users across the food supply chain. The existing Agrecalc customer base includes major retailers, commercial farms, food producer groups and government programs. Our aim is to grow our tool into a scalable, accessible cloud-based software platform which will interact with other data sources to enable actors across the global food system to baseline and reduce their greenhouse gas emissions.