The Agriculture and Land Use Greenhouse Gas Inventory (ALU) Software guides an inventory compiler through the process of estimating greenhouse gas emissions and removals related to agricultural and forestry activities. The software simplifies the process of conducting the inventory by dividing the inventory analysis into steps to facilitate the compilation of activity data, assignment of emission factors, and completion of the calculations. The software also has internal checks to ensure data integrity. Furthermore, the software program is designed to support an evaluation of mitigation potentials using the inventory data as a baseline for projecting emission trends associated with management alternatives.