The Human Capital Index (HCI) is an annual measurement prepared by the World Bank.[1] HCI measures which countries are best in mobilizing their human capital, the economic and professional potential of their citizens. The index measures how much capital each country loses through lack of education and health. The index ranges between 0 and 1, with 1 meaning maximum potential is reached.[2] HCI is used in country studies of employment and wages, for example in Ukraine after Russia's invasion.[3]