Inequality-adjusted Human Development Index vs. Human Development Index in Tonga
Tonga: Inequality-adjusted Human Development Index vs. Human Development Index was 0.682 in 2023. ▬ Flat
Inequality-adjusted Human Development Index vs. Human Development Index in Tonga, 2019–2023
Source: UNDP, Human Development Report (2025) – with minor processing by Our World in Data.
Analysis
Tonga recorded 0.682 for inequality-adjusted human development index vs. human development index in 2023. That is the highest value across all 5 years on record.
That represents a change of up 0.7% on the previous year and up 1.0% over five years.
That places Tonga 61st out of 163 countries with data for 2023, putting it in the middle of the range.
Averages by decade
| Decade | Average | Lowest | Highest | Years |
|---|---|---|---|---|
| 2010s | 0.675 | 0.675 | 0.675 | 1 |
| 2020s | 0.6783 | 0.676 | 0.682 | 4 |
Countries ranked near Tonga
More poverty & inequality data for Tonga
- Number of income/consumption surveys in the past decade available via the World Bank 1 surveys (2025)
- Fertility rate vs. share living in extreme poverty 3.13 live births per woman (2023)
- Tax revenue as share of GDP vs. income inequality 22.2% (2023)
- Gender Inequality Index 0.444 (2023)
- Lifespan inequality: Gini coefficient in women 0.1077 (2023)
- Lifespan inequality: Gini coefficient by sex 0.1077 (2023)
- Lifespan inequality: Gini coefficient in men 0.1324 (2023)
- Income inequality: Atkinson index 0.2074 (2023)
- Population living in slums 0.3% (2022)
- Inequality-adjusted Human Development Index 0.682 (2023)
Frequently asked questions
- What is inequality-adjusted human development index vs. human development index in Tonga?
- Inequality-adjusted human development index vs. human development index in Tonga was 0.682 in 2023, according to UNDP, Human Development Report (2025) – with minor processing by Our World in Data.
- What is the highest inequality-adjusted human development index vs. human development index recorded in Tonga?
- The highest recorded value was 0.682 in 2023.
- What is the lowest inequality-adjusted human development index vs. human development index recorded in Tonga?
- The lowest recorded value was 0.675 in 2019.
- How does Tonga rank for inequality-adjusted human development index vs. human development index?
- Tonga ranks 61st out of 163 countries with data for 2023.
- Where does this Tonga data come from?
- The figures come from UNDP, Human Development Report (2025) – with minor processing by Our World in Data, published as part of Inequality-adjusted Human Development Index vs. Human Development Index. Statizoid updates them automatically from the source API.
Download this data
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About this data
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.