Calculating the Social Cost of Greenhouse Gases

This tool lets users calculate the damages from a given amount of greenhouse gas emissions. Users can use either: 1) EPA’s 2023 estimates (the best available estimates); 2) the Interagency Working Group's 2021 interim estimates; or 3) New York's 2020 estimates. All values are in 2020$.

Enter your parameters above, then press Calculate

Note: If a user is interested in computing damages from greenhouse gas emissions across many years, for example from a fossil fuel project that is expected to release emissions every year for 10 years, the user should enter each year’s emissions separately, being sure to enter the correct year of emissions and amount of emissions each time, and add them up manually.