The Household Food Insecurity Access Scale (HFIAS) provides a simple and user-friendly approach for measuring the impacts of development food aid programs on the access component of household food insecurity. The guide includes a standardized questionnaire and data collection and analysis instructions. The HFIAS is composed of a set of nine questions that have been used in several countries and appear to distinguish food insecure from food secure households across different cultural contexts. The information generated by the HFIAS can be used to assess the prevalence of household food insecurity (access component) and to detect changes in the food insecurity situation of a population over time.