Guidelines & Tools Clean Fleet Toolkit: Emissions Calculator Tool Share SHARE Facebook share Twitter LinkedIn Copy URL Email Download Download index en Added on: 26 November, 2025 Breadcrumb Home Resource Library Clean Fleet Toolkit: Emissions Calculator Tool This toolkit is designed to provide organizations insights into their fleet’s current emissions, impacts and costs, and the relative improvements that different options could provide. The calculations are based on estimations and average emission factors. The actual level of impacts, emissions, costs and savings will be influenced by a number of factors including: driver behavior; road conditions; traffic patterns; vehicle age and condition; maintenance etc. Related partners United Nations Environment Programme (UNEP)