The new and updated UNEP OzonAction GWP-ODP Calculator application will help you to convert between values in metric tonnes, ozone depleting potential (ODP) tonnes and CO2-equivalent tonnes of substances controlled by the Montreal Protocol and their alternatives. This application, available at no cost, is particularly useful for National Ozone Officers to assist with understanding and calculating quantities of controlled substances, both pure substances and mixtures, for quota assignment, reporting requirements, etc. Other stakeholders interested in ODP and global warming potential (GWP) values of controlled substances and their alternatives will also find this tool useful.
UN Environment Programme is an Implementing Agency of the Multilateral Fund for the Implementation of the Montreal Protocol. OzonAction is part of UN Environment Programme's Law Division and serves 147 developing countries through the Compliance Assistance Programme.