Fire Emission Production Simulator (FEPS) is a user-friendly computer program designed for scientists and resource managers with some working knowledge of Microsoft Windows applications. The software manages data concerning consumption, emissions and heat release characteristics of prescribed burns and wildland fires. The original Emissions Production Model (EPM) was designed to help managers estimate and mitigate the rates of heat, particles, and carbon gas emissions from controlled burns of harvest-slash residue in Northwest forests. In updating EPM, a significant number of improvements were made, to the usability, applicability, and accuracy of the model. The calculation approach was totally redesigned, and the model has been renamed FEPS.