The BICADS V1.0 (Building Injury Calculator And DatabaseS) computer program, developed by Protection Engineering Consultants staff, calculates the percentages of occupants of blast-loaded buildings with each of four different injury levels based on user input defining basic building construction parameters, the percentage of building occupants in perimeter or interior space, and the blast source. The program calculates the percentages of building occupants with each injury level on each floor panel in the building from any failed surrounding building components, including windows and interior non-structural components, and from progressive building collapse, then sums over the floor panels to get the total building injury statistics. The fast-running program is an approximate methodology that was developed based on injury data from terrorist bombings, accidental explosions, and explosive tests; simple engineering models; and engineering judgment. It is compared to available injury databases in a methodology report distributed with the program.