The Kalkulator is a rapid ex-ante impact assessment tool with minimum data requirements that allows users to benchmark and explore multiple environmental impacts of interventions (e.g. productivity-enhancing agricultural practices, soil protection measures) on a farm using four indicators: greenhouse gas emissions, soil nitrogen balance, soil erosion, and on-farm calorie production. Model has been applied in Kenya, Ethiopia, Benin, Burkina Faso, Tanzania, India and Nicaragua