Brunei vs Japan
Brunei has a population of 456K, compared to Japan's 123.2M. Japan is 270.5 times more populous than Brunei. Economically, Japan ($4.03T) has a GDP 262.5 times larger than Brunei's ($15.3B). Japan covers 377,930 km², 65.6 times larger than Brunei's 5,765 km². Life expectancy in Japan stands at 84.0 years, 8.7 years higher than Brunei's 75.3 years.
BruneiJapan| Population | -99.6%456K | +26949.4%123.2M |
| Area | -98.5%5,765 km² | +6455.6%377,930 km² |
| GDP | -99.6%$15.3B | +26154.1%$4.03T |
| GDP Per Capita | +2.1%$33,153.474 | -2.0%$32,487.078 |
| Life Expectancy | -10.4%75.3 yrs | +11.6%84.0 yrs |
| Infant Mortality | +355.6%8.2 | -78.0%1.8 |
| Literacy Rate | — | — |
| Unemployment | +115.3%5.3% | -53.6%2.5% |
| Capital | Bandar Seri Begawan | Tokyo |
| Region | Asia | Asia |
| Languages | Malay | Japanese |
| Currencies | BND ($), SGD ($) | 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
Japan is 270.5 times more populous than Brunei, with 123.2M residents compared to 456K. Brunei is a nation of 456K people, while Japan is among the world's 15 most populous countries. In terms of population density, Brunei averages 79 people per km² (moderate), while Japan averages 326 people per km² (dense). Population growth rate data is not available for either country over the past decade.
Economy Comparison
Brunei is classified as a high-income economy, while Japan is classified as a high-income economy. The Japan economy ($4.03T) is 262.5 times larger than Brunei's ($15.3B). Brunei's GDP per capita of $33,153.474 is 196% above 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 Brunei are on average 1.0 times wealthier than those in Japan.
Health & Quality of Life
Life expectancy in Brunei is 75.3 years, compared to 84.0 years in Japan, a gap of 8.7 years. Japan (84.0 years) is 12.0 years above the global average of 72 years, while Brunei (75.3 years) is 3.3 years above the global average of 72 years. At 8.2 deaths per 1,000 live births, Brunei's infant mortality is 356% higher than Japan's 1.8.
Geographic Comparison
Japan (377,930 km²) is 65.6 times larger by land area than Brunei (5,765 km²). Brunei shares borders with 1 country, while Japan borders 0 countries. Brunei spans 1 timezone, compared to Japan's 1 timezone. Both Brunei 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 Brunei and Japan is in population: Brunei's 456K compared to Japan's 123.2M represents a 100% gap. The most significant difference between Brunei and Japan is in GDP: Brunei's $15.3B compared to Japan's $4.03T represents a 100% gap. The most significant difference between Brunei and Japan is in land area: Brunei's 5,765 km² compared to Japan's 377,930 km² represents a 98% gap. These disparities reflect the broader structural differences between Brunei's high-income economy and Japan's high-income economy.
At a Glance: What the Numbers Mean
Living Standards
Brunei has a GDP per capita of $33,153.474, which is 1.0x that of Japan ($32,487.078). This gap reflects differences in economic development, industrial structure, and workforce productivity. In practical terms, average purchasing power in Brunei is significantly higher, though cost of living differences partially offset the raw income gap.
Population Density
Japan is 4.1x more densely populated than Brunei (326 vs 79 people per km²). Higher density typically correlates with more urbanization, greater demand for public transit, and higher housing costs. Brunei's lower density suggests more rural land use and potentially lower urban congestion.
Healthcare and Longevity
Citizens of Japan live an average of 8.7 years longer than those of Brunei (84.0 vs 75.3 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
Brunei's economy grew at 4.1% compared to Japan's 0.1%. Both countries show healthy growth, though Brunei has a modest edge in economic dynamism.
Travel Comparison
Brunei vs Japan for Families
For family travel, Japan generally edges ahead due to lower infant mortality (1.8 vs 8.2 per 1,000), which is a useful proxy for healthcare infrastructure and child safety. Brunei offers its own advantages, including a more compact geography that is easier to navigate with children. Both countries have family-friendly attractions, though Japan's higher GDP per capita typically correlates with better tourist infrastructure, public transport, and English-language availability.
Brunei vs Japan for Budget Travelers
Japan is typically the more budget-friendly destination, with a GDP per capita of $32,487.078 translating to lower prices for accommodation, food, and local transport. Budget travelers in Japan can expect to spend significantly less per day than in Brunei. However, Brunei may offer better value in specific categories such as intercity transport or package deals. Shoulder season travel in either country helps reduce costs further.
Brunei vs Japan for Retirees
Japan's life expectancy of 84.0 years suggests stronger healthcare infrastructure, which is a key factor for retirees. Brunei may offer a lower cost of living, which stretches pension income further. Key considerations for retirees include visa and residency requirements, healthcare access, climate preferences, and proximity to international airports. Both countries have established expat communities, though the specific visa options and healthcare quality vary by region within each country.
Brunei vs Japan Cost of Living
Brunei's GDP per capita is 1.0x that of Japan, which generally correlates with a higher cost of living. Housing, dining out, and services tend to be more expensive in Brunei, while Japan offers more purchasing power per dollar for everyday expenses. However, cost of living varies significantly by city within each country. Major urban centers in Japan can approach or exceed average costs in Brunei's smaller cities.
Brunei vs Japan for Digital Nomads
For digital nomads choosing between Brunei and Japan, key factors include internet infrastructure, visa policies, cost of living, and timezone compatibility with clients. Brunei spans 1 timezone while Japan covers 1. Japan's lower cost of living makes it attractive for stretching remote income. Both countries have growing digital nomad communities, though specific visa requirements for remote workers differ and should be verified before committing to a longer stay.
Frequently Asked Questions
Which is bigger, Brunei or Japan by population?
Japan is larger by population, with 123.2M residents compared to Brunei's 456K. Japan is 270.5 times more populous than Brunei.
Which country has a higher GDP, Brunei or Japan?
Japan has the higher GDP at $4.03T, compared to Brunei's $15.3B. Japan's economy is 262.5 times larger.
How does life expectancy compare between Brunei and Japan?
Japan has a higher life expectancy at 84.0 years, compared to Brunei's 75.3 years. The gap between the two countries is 8.7 years. Brunei's life expectancy is 3.3 years above 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, Brunei or Japan?
Japan is larger by land area, covering 377,930 km² compared to Brunei's 5,765 km². Japan is 65.6 times larger than Brunei.
What languages are spoken in Brunei and Japan?
Brunei recognizes the following official language: Malay. Japan recognizes: Japanese. The two countries do not share an official language.
Which country has lower inflation, Brunei or Japan?
Brunei has lower inflation at -0.4%, compared to Japan's 2.7%. Brunei'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.
Is Brunei or Japan better for a family holiday?
For family travel, Japan generally edges ahead due to lower infant mortality (1.8 vs 8.2 per 1,000), which is a useful proxy for healthcare infrastructure and child safety. Brunei offers its own advantages, including a more compact geography that is easier to navigate with children. Both countries h...
Is Brunei or Japan cheaper to visit?
Japan is typically the more budget-friendly destination, with a GDP per capita of $32,487.078 translating to lower prices for accommodation, food, and local transport. Budget travelers in Japan can expect to spend significantly less per day than in Brunei. However, Brunei may offer better value in s...
Is Brunei or Japan better for retirement?
Japan's life expectancy of 84.0 years suggests stronger healthcare infrastructure, which is a key factor for retirees. Brunei may offer a lower cost of living, which stretches pension income further. Key considerations for retirees include visa and residency requirements, healthcare access, climate ...
Is Brunei or Japan more expensive to live in?
Brunei's GDP per capita is 1.0x that of Japan, which generally correlates with a higher cost of living. Housing, dining out, and services tend to be more expensive in Brunei, while Japan offers more purchasing power per dollar for everyday expenses. However, cost of living varies significantly by ci...
Is Brunei or Japan better for digital nomads?
For digital nomads choosing between Brunei and Japan, key factors include internet infrastructure, visa policies, cost of living, and timezone compatibility with clients. Brunei spans 1 timezone while Japan covers 1. Japan's lower cost of living makes it attractive for stretching remote income. Both...