Inequality in life expectancy in Japan
Japan: Inequality in life expectancy was 0.0255 in 2023. ▼ Falling
Inequality in life expectancy in Japan, 2010–2023
Source: UNDP, Human Development Report (2025) – with minor processing by Our World in Data.
Analysis
The most recent figure for inequality in life expectancy in Japan is 0.0255, measured in 2023. That is the lowest value across all 14 years on record.
The figure is down 2.0% on the previous year and down 13.9% over ten years.
Over the whole period, inequality in life expectancy in Japan peaked at 0.0337 in 2011 and was at its lowest, 0.0255, in 2023.
That places Japan 190th out of 195 countries with data for 2023, putting it in the bottom quarter.
The long-run direction has been consistently falling across the 14 years of available data.
Averages by decade
| Decade | Average | Lowest | Highest | Years |
|---|---|---|---|---|
| 2010s | 0.0293 | 0.027 | 0.0337 | 10 |
| 2020s | 0.026 | 0.0255 | 0.0264 | 4 |
Countries ranked near Japan
More health data for Japan
- Estimated changes in temperature-related death rates compared to projected death rates 1,294 deaths per 1,000 people (2090)
- Number of infants who die before age 1 178 deaths (2100)
- Deaths in armed conflicts based on where they occurred 0 deaths (2026)
- Deaths in armed conflicts by region 0 deaths (2026)
- Age population, age 25, male, interpolated 633,995 (2025)
- Age population, age 25, female, interpolated 607,213 (2025)
- Age population, age 24, male, interpolated 640,318 (2025)
- Age population, age 24, female, interpolated 611,707 (2025)
- Age population, age 23, male, interpolated 638,500 (2025)
- Age population, age 23, female, interpolated 608,501 (2025)
Frequently asked questions
- What is inequality in life expectancy in Japan?
- Inequality in life expectancy in Japan was 0.0255 in 2023, according to UNDP, Human Development Report (2025) – with minor processing by Our World in Data.
- What is the highest inequality in life expectancy recorded in Japan?
- The highest recorded value was 0.0337 in 2011.
- What is the lowest inequality in life expectancy recorded in Japan?
- The lowest recorded value was 0.0255 in 2023.
- How does Japan rank for inequality in life expectancy?
- Japan ranks 190th out of 195 countries with data for 2023.
- Is inequality in life expectancy rising or falling in Japan?
- Over the last ten years it is down 13.9%. The long-run trend across the full record is falling.
- Where does this Japan 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 in life expectancy. Statizoid updates them automatically from the source API.
Download this data
CSV · JSON — 14 observations, free to reuse under CC BY 4.0 (Our World in Data).
About this data
The Atkinson index measures inequality on a scale from 0 to 1. Higher values indicate higher inequality. Inequality is measured here in terms of the number of years a newborn would live if age-specific mortality rates in the current year were to stay the same throughout its life.