Method and program for calculating environmental load, and unit conversion method

摘要

A technology is provided in which it is not necessary to modify a system on a production side, and in which man-hours required for registering an environmental load value on a supplier side are not increased, in cases of an item having a mismatch between units, in a process of adding up the environmental load values of a post-production product. The technology includes generating correction information for calculating the environmental load that is registered by the supplier at design time, and calculating the environmental load value at design time by using the correction information. In cases of calculating the environmental load value of a product actually produced from a designed product, the environmental load value is calculated using the correction information generated at design time.