Indonesia vs Japan
Indonesia has a population of 284.4M, compared to Japan's 123.2M. Indonesia is 2.3 times more populous than Japan. Economically, Japan ($4.03T) has a GDP 2.9 times larger than Indonesia's ($1.40T). Indonesia covers 1,904,569 km², 5.0 times larger than Japan's 377,930 km². Life expectancy in Japan stands at 84.0 years, 12.9 years higher than Indonesia's 71.1 years.
IndonesiaJapan| Population | +130.9%284.4M | -56.7%123.2M |
| Area | +403.9%1,904,569 km² | -80.2%377,930 km² |
| GDP | -65.3%$1.40T | +188.4%$4.03T |
| GDP Per Capita | -84.8%$4,925.43 | +559.6%$32,487.078 |
| Life Expectancy | -15.3%71.1 yrs | +18.1%84.0 yrs |
| Infant Mortality | +844.4%17.0 | -89.4%1.8 |
| Literacy Rate | — | — |
| Unemployment | +32.1%3.2% | -24.3%2.5% |
| Capital | Jakarta | Tokyo |
| Region | Asia | Asia |
| Languages | Indonesian | Japanese |
| Currencies | IDR (Rp) | JPY (¥) |
Last updated: March 2026
All data sourced from World Bank Open Data (2025) and REST Countries API. Economic data may reflect most recent available year.
Population Comparison
Indonesia is 2.3 times more populous than Japan, with 284.4M residents compared to 123.2M. Indonesia is among the world's 15 most populous countries, while Japan is among the world's 15 most populous countries. In terms of population density, Indonesia averages 149 people per km² (moderate), while Japan averages 326 people per km² (dense). Indonesia has grown at 0.95% annually over the past decade. Population growth data is not available for Japan.
Economy Comparison
Indonesia is classified as a upper-middle-income economy, while Japan is classified as a high-income economy. The Japan economy ($4.03T) is 2.9 times larger than Indonesia's ($1.40T). Indonesia's GDP per capita of $4,925.43 is 56% below the regional average of 11,200 for Asia. Japan's GDP per capita of $32,487.078 is 190% above the regional average of 11,200 for Asia. On a per-capita basis, residents of Japan are on average 6.6 times wealthier than those in Indonesia.
Health & Quality of Life
Life expectancy in Indonesia is 71.1 years, compared to 84.0 years in Japan, a gap of 12.9 years. Japan (84.0 years) is 12.0 years above the global average of 72 years, while Indonesia (71.1 years) is 0.9 years below the global average of 72 years. At 17.0 deaths per 1,000 live births, Indonesia's infant mortality is 844% higher than Japan's 1.8.
Geographic Comparison
Indonesia (1,904,569 km²) is 5.0 times larger by land area than Japan (377,930 km²). Indonesia shares borders with 3 countries, while Japan borders 0 countries. Indonesia spans 3 timezones, compared to Japan's 1 timezone. Both Indonesia and Japan are located in Asia. Both countries fall within the Asia region, though they occupy different subregions: South-Eastern Asia and Eastern Asia.
Key Differences
The most significant difference between Indonesia and Japan is in infant mortality: Indonesia's 17.0 per 1,000 compared to Japan's 1.8 per 1,000 represents a 89% gap. The most significant difference between Indonesia and Japan is in GDP per capita: Indonesia's $4,925.43 compared to Japan's $32,487.078 represents a 85% gap. The most significant difference between Indonesia and Japan is in land area: Indonesia's 1,904,569 km² compared to Japan's 377,930 km² represents a 80% gap. These disparities reflect the broader structural differences between Indonesia's upper-middle-income economy and Japan's high-income economy.
At a Glance: What the Numbers Mean
Living Standards
Japan has a GDP per capita of $32,487.078, which is 6.6x that of Indonesia ($4,925.43). This gap reflects differences in economic development, industrial structure, and workforce productivity. In practical terms, average purchasing power in Japan is significantly higher, though cost of living differences partially offset the raw income gap.
Population Density
Japan is 2.2x more densely populated than Indonesia (326 vs 149 people per km²). Higher density typically correlates with more urbanization, greater demand for public transit, and higher housing costs. Indonesia's lower density suggests more rural land use and potentially lower urban congestion.
Healthcare and Longevity
Citizens of Japan live an average of 12.9 years longer than those of Indonesia (84.0 vs 71.1 years). This gap reflects differences in healthcare access, nutrition, public health infrastructure, and environmental factors. This is a substantial gap that suggests significant differences in healthcare systems and overall living conditions.
Economic Momentum
Indonesia's economy grew at 5.0% compared to Japan's 0.1%. Indonesia's high growth rate suggests a rapidly developing economy with expanding opportunities.
Frequently Asked Questions
Which is bigger, Indonesia or Japan by population?
Indonesia is larger by population, with 284.4M residents compared to Japan's 123.2M. Indonesia is 2.3 times more populous than Japan.
Which country has a higher GDP, Indonesia or Japan?
Japan has the higher GDP at $4.03T, compared to Indonesia's $1.40T. Japan's economy is 2.9 times larger.
How does life expectancy compare between Indonesia and Japan?
Japan has a higher life expectancy at 84.0 years, compared to Indonesia's 71.1 years. The gap between the two countries is 12.9 years. Indonesia's life expectancy is 0.9 years below the global average of 72 years, while Japan's is 12.0 years above the global average of 72 years.
Which country is larger by area, Indonesia or Japan?
Indonesia is larger by land area, covering 1,904,569 km² compared to Japan's 377,930 km². Indonesia is 5.0 times larger than Japan.
What languages are spoken in Indonesia and Japan?
Indonesia recognizes the following official language: Indonesian. Japan recognizes: Japanese. The two countries do not share an official language.
Which country has lower inflation, Indonesia or Japan?
Indonesia has lower inflation at 2.2%, compared to Japan's 2.7%. Indonesia's inflation is within the 2-3% range considered stable by most central banks, while Japan's rate is within the 2-3% range considered stable by most central banks.