The Global Fortification Data Exchange (GFDx) is an online tool, which provides unparalleled access to critical data on food fortification, all in one place, as well as tools to aid in analysis and visualization. It is a joint effort by the Food Fortification Initiative (FFI), Global Alliance for Improved Nutrition (GAIN), Iodine Global Network (IGN), and Micronutrient Forum, which represents a significant step forward in the effort to improve the availability, stewardship and presentation of fortification data.It was designed to empower governments, donors, implementing agencies, and other members of the global health and development community to reach populations affected by vitamin and mineral deficiencies with data-driven policy and programs. The GFDx aggregates and visualizes data to inform the planning, resourcing, implementation, and evaluation of food fortification programs. This tool was designed to make existing global datasets open, discoverable and understandable and to enable decision makers to answer critical questions like:- How many and which countries require the mandatory fortification of maize flour, oil, rice, salt, or wheat flour?- In countries with legislation standards, what nutrients are required to be included in fortified foods?- How much maize flour, oil, rice, salt, or wheat flour is available or consumed in a given country?- What proportion of maize flour, oil, rice, salt, or wheat flour is industrially processed and hence able to be fortified?- How much of the food consumed in a given country is fortified at levels that meet the country’s standards?- What proportion of a country’s population is consuming fortified maize flour, oil, rice, salt, or wheat flour?All of the data in the GFDx comes from countries and national programs which is updated regularly. While some data had already been compiled globally, in independently managed, separate databases for each food and other important food fortification data existed in national databases the GFDx consolidates all available data for all five foods. This assists national decision-makers to more holistically view their fortification programs, identify gaps, and make comparisons across foods and between countries. Importantly, compiling national and global data and consolidating data sets across standardized indicators reflects the need for a collaborative and crosscutting partnership in fortification in order to improve diets and well-being globally.