Inequality-adjusted Human Development Index

What you should know about this indicator

  • The Inequality-adjusted Human Development Index (IHDI) adjusts the Human Development Index (HDI) for inequality in the distribution of each dimension across the population.
  • It is based on a distribution-sensitive class of composite indices proposed by Foster, Lopez-Calva and Szekely (2005), which draws on the Atkinson (1970) family of inequality measures. It is computed as a geometric mean of inequality-adjusted dimensional indices.
  • The IHDI accounts for inequalities in HDI dimensions by “discounting” each dimension's average value according to its level of inequality. The IHDI value equals the HDI value when there is no inequality across people but falls below the HDI value as inequality rises. In this sense the IHDI measures the level of human development when inequality is accounted for.
Inequality-adjusted Human Development Index
The Inequality-adjusted Human Development Index (IHDI) is a summary measure of key dimensions of human development: a long and healthy life, a good education, and a decent standard of living, adjusted for inequalities in these dimensions. Higher values indicate higher and more equal human development.
UNDP, Human Development Report (2024) – with minor processing by Our World in Data
Last updated
April 9, 2024
Next expected update
April 2025
Date range

Sources and processing

This data is based on the following sources

The 2023/24 Human Development Report assesses the dangerous gridlock resulting from uneven development progress, intensifying inequality, and escalating political polarization, that we must urgently tackle. The report emphasizes how global interdependence is being reconfigured and proposes a path forward where multilateralism plays a pivotal role.

Additional resources related to the 2023/2024 Human Development Report can be found online at Resources on the website include digital versions and translations of the Report and the overview in multiple languages, an interactive web version of the Report, a set of background papers and think pieces commissioned for the Report, interactive data visualizations and databases of human development indicators, full explanations of the sources and methodologies used in the Report’s composite indices, country insights and other background materials, and previous global, regional and national Human Development Reports. Corrections and addenda are also available online.

Technical notes (region definitions, reports, etc.) can be found at

Retrieved on
April 9, 2024
Retrieved from
This is the citation of the original data obtained from the source, prior to any processing or adaptation by Our World in Data. To cite data downloaded from this page, please use the suggested citation given in Reuse This Work below.
UNDP (United Nations Development Programme). 2024. Human Development Report 2023-24: Breaking the gridlock: Reimagining cooperation in a polarized world. New York.

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To cite this page overall, including any descriptions, FAQs or explanations of the data authored by Our World in Data, please use the following citation:

“Data Page: Inequality-adjusted Human Development Index”, part of the following publication: Bastian Herre and Pablo Arriagada (2023) - “The Human Development Index and related indices: what they are and what we can learn from them”. Data adapted from UNDP, Human Development Report. Retrieved from [online resource]
How to cite this data

In-line citationIf you have limited space (e.g. in data visualizations), you can use this abbreviated in-line citation:

UNDP, Human Development Report (2024) – with minor processing by Our World in Data

Full citation

UNDP, Human Development Report (2024) – with minor processing by Our World in Data. “Inequality-adjusted Human Development Index” [dataset]. UNDP, Human Development Report, “Human Development Report 2023-2024” [original data]. Retrieved July 17, 2024 from