Consume is a decision-making tool designed to assist resource managers in planning for wildland fire events (e.g., prescribed fires and wildfires). Consume predicts fuel consumption, pollutant emissions, and heat release based on fuel loadings, fuel moisture, and other environmental factors. Using these predictions, resource managers can determine when and where to conduct a prescribed burn or manage an unplanned wildland fire to achieve desired objectives while reducing the impact on other resources. Consume 4.2 reflects an improved understanding of fuel consumption and emissions in wildland fire throughout major fuel types in the United States. Consume 4.2 has been recoded as a calculator module that can be used within the Fuel and Fire Tools or as a command line version. The python source code is a freely sharable module that has been incorporated into BlueSky and the Wildland Fire Emissions Inventory System. An earlier version (Consume 4.0) has been included in the Integrated Fuel Treatment Decision Support System (IFTDSS) but has not been fully tested and does not return the same values as Consume 4.2.