Construction Carbon Calculator

This tool estimates the net embodied carbon of a project’s structures and site. The measurements account for building materials, processes and carbon released due to ecosystem degradation or sequestered through landscape installation or restoration. Landscape inputs are ecoregion, area and type of existing vegetation, area disturbed, and area and type of vegetation installed. (Vegetation type categories are very broad and primarily refer to mature natural landscapes.) Building inputs are size, number of stories, and primary structural system material. The calculator yields the net embodied CO2 for the entire project.

http://buildcarbonneutral.org/