The Athena EcoCalculator is a free software tool that provides instant LCA results for hundreds of common building assemblies.

Release History

Current release of the EcoCalculator for Commercial Assemblies is version 3.6.
Complete EcoCalculator for Commercial Assemblies Revision History >

Current release of the EcoCalculator for Residential Assemblies is version 1.1.
Complete EcoCalculator for Residential Assemblies Revision History >

The EcoCalculator was originally developed for the Green Building Initiative, as a tool for securing LCA-based points in Green Globes™. It was developed by the Athena Institute in association with the University of Minnesota and Morrison Hershfield Consulting Engineers. The EcoCalculator was later also adopted for use in a LEED® LCA-based pilot credit.

The commercial building version of the EcoCalculator was first released as a free product in 2007. The residential version was developed in 2010, for the APA Carbon Challenge.