This website offers post harvest losses estimates (PHLs) – percent weight losses – for the cereal crops of the East and Southern African, for individual countries and for their provinces. The PHL calculator that makes these estimates can be downloaded by users as a spreadsheet and default values changed to user preferences. A "Users' Guide" to the system and a Review Paper on post harvest weight loss estimates for the region can also be downloaded, and the data for each country can be downloaded. The data on which this system is based was submitted by local experts who together form the PHL Network.