The National Fire Research Laboratory (NFRL) operates calorimeters to measure the heat and combustion products for fires in the range of 50 kW to 20,000 kW. This Fire Calorimetry Database (FCD) contains results of fire experiments conducted at the NFRL. The specimens contained in this database include single burning items, fully furnished rooms, controlled burners, well characterized fuels and real composite fuels of unknown composition. The measurement method is described by Bryant and Bundy, 2019.