Non-Alcoholic Fatty Liver Disease Assessment Tool had been developed to evaluate the presence of fatty infiltration of the liver among general populations which might be asymptomatic for long time among most population. This application was created based on evaluation of established risk factors and a cohorts study conducted in the Middle East which evaluates the accuracy and validity for the risk assessment of Non-alcoholic fatty liver disease using Computer based calculator on this website and on a mobile app which can be installed on Google play called namely: Non-Alcoholic Fatty Liver Score.