JapanUnited Kingdom
Japan has a population of 123.2M, compared to United Kingdom's 69.3M. Japan is 1.8 times more populous than United Kingdom. Economically, Japan ($4.03T) has a GDP 1.1 times larger than United Kingdom's ($3.69T). Japan covers 377,930 km², 1.5 times larger than United Kingdom's 244,376 km². Life expectancy in Japan stands at 84.0 years, 2.8 years higher than United Kingdom's 81.2 years.
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Metric
JapanUnited Kingdom| Population | 123.2M | 69.3M |
| Area | 377,930 km² | 244,376 km² |
| GDP | $4.03T | $3.69T |
| GDP Per Capita | $32,487.078 | $53,246.368 |
| Life Expectancy | 84.0 yrs | 81.2 yrs |
| Infant Mortality | 1.8 | 4.0 |
| Literacy Rate | — | — |
| Unemployment | 2.5% | 4.7% |
| Capital | Tokyo | London |
| Region | Asia | Europe |
| Languages | Japanese | English |
| Currencies | JPY (¥) | GBP (£) |
Last updated: April 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 1.8 times more populous than United Kingdom, with 123.2M residents compared to 69.3M. Japan is among the world's 15 most populous countries, while United Kingdom is among the world's 30 most populous countries. In terms of population density, Japan averages 326 people per km² (dense), while United Kingdom averages 284 people per km² (dense). United Kingdom has grown at 0.66% annually over the past decade. Population growth data is not available for Japan.
Economy Comparison
Japan is classified as a high-income economy, while United Kingdom is classified as a high-income economy. The Japan economy ($4.03T) is 1.1 times larger than United Kingdom's ($3.69T). Japan's GDP per capita of $32,487.078 is 190% above the regional average of 11,200 for Asia. United Kingdom's GDP per capita of $53,246.368 is 90% above the regional average of 28,000 for Europe. On a per-capita basis, residents of United Kingdom are on average 1.6 times wealthier than those in Japan.
Health & Quality of Life
Life expectancy in Japan is 84.0 years, compared to 81.2 years in United Kingdom, a gap of 2.8 years. Japan (84.0 years) is 12.0 years above the global average of 72 years, while United Kingdom (81.2 years) is 9.2 years above the global average of 72 years. At 4.0 deaths per 1,000 live births, United Kingdom's infant mortality is 122% higher than Japan's 1.8.
Geographic Comparison
Japan (377,930 km²) is 1.5 times larger by land area than United Kingdom (244,376 km²). Japan shares borders with 0 countries, while United Kingdom borders 1 country. Japan spans 1 timezone, compared to United Kingdom's 9 timezones. Japan lies in Asia, while United Kingdom is located in Europe. Japan is categorized within the Asia region (Eastern Asia), whereas United Kingdom belongs to Europe (Northern Europe).
Key Differences
The most significant difference between Japan and United Kingdom is in infant mortality: Japan's 1.8 per 1,000 compared to United Kingdom's 4.0 per 1,000 represents a 55% gap. The most significant difference between Japan and United Kingdom is in population: Japan's 123.2M compared to United Kingdom's 69.3M represents a 44% gap. The most significant difference between Japan and United Kingdom is in GDP per capita: Japan's $32,487.078 compared to United Kingdom's $53,246.368 represents a 39% gap. These disparities reflect the broader structural differences between Japan's high-income economy and United Kingdom's high-income economy.
At a Glance: What the Numbers Mean
Living Standards
United Kingdom has a GDP per capita of $53,246.368, which is 1.6x 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 United Kingdom is significantly higher, though cost of living differences partially offset the raw income gap.
Population Density
Japan is 1.1x more densely populated than United Kingdom (326 vs 284 people per km²). Higher density typically correlates with more urbanization, greater demand for public transit, and higher housing costs. United Kingdom's lower density suggests more rural land use and potentially lower urban congestion.
Healthcare and Longevity
Citizens of Japan live an average of 2.8 years longer than those of United Kingdom (84.0 vs 81.2 years). This gap reflects differences in healthcare access, nutrition, public health infrastructure, and environmental factors. This is a moderate difference that could narrow with continued development.
Economic Momentum
United Kingdom's economy grew at 1.1% compared to Japan's 0.1%. Both economies are growing slowly, which may reflect maturity or structural challenges.
Travel Comparison
Japan vs United Kingdom for Families
For family travel, Japan generally edges ahead due to lower infant mortality (1.8 vs 4.0 per 1,000), which is a useful proxy for healthcare infrastructure and child safety. United Kingdom 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.
Japan vs United Kingdom 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 United Kingdom. However, United Kingdom may offer better value in specific categories such as intercity transport or package deals. Shoulder season travel in either country helps reduce costs further.
Japan vs United Kingdom for Retirees
Japan's life expectancy of 84.0 years suggests stronger healthcare infrastructure, which is a key factor for retirees. United Kingdom 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.
Japan vs United Kingdom Cost of Living
United Kingdom's GDP per capita is 1.6x that of Japan, which generally correlates with a higher cost of living. Housing, dining out, and services tend to be more expensive in United Kingdom, 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 United Kingdom's smaller cities.
Japan vs United Kingdom for Digital Nomads
For digital nomads choosing between Japan and United Kingdom, key factors include internet infrastructure, visa policies, cost of living, and timezone compatibility with clients. Japan spans 1 timezone while United Kingdom covers 9. 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, Japan or United Kingdom by population?
Japan is larger by population, with 123.2M residents compared to United Kingdom's 69.3M. Japan is 1.8 times more populous than United Kingdom.
Which country has a higher GDP, Japan or United Kingdom?
Japan has the higher GDP at $4.03T, compared to United Kingdom's $3.69T. Japan's economy is 1.1 times larger.
How does life expectancy compare between Japan and United Kingdom?
Japan has a higher life expectancy at 84.0 years, compared to United Kingdom's 81.2 years. The gap between the two countries is 2.8 years. Japan's life expectancy is 12.0 years above the global average of 72 years, while United Kingdom's is 9.2 years above the global average of 72 years.
Which country is larger by area, Japan or United Kingdom?
Japan is larger by land area, covering 377,930 km² compared to United Kingdom's 244,376 km². Japan is 1.5 times larger than United Kingdom.
What languages are spoken in Japan and United Kingdom?
Japan recognizes the following official language: Japanese. United Kingdom recognizes: English. The two countries do not share an official language.
Which country has lower inflation, Japan or United Kingdom?
Japan has lower inflation at 2.7%, compared to United Kingdom's 3.3%. Japan's inflation is within the 2-3% range considered stable by most central banks, while United Kingdom's rate is moderately elevated above the global median of 3.5%.
Is Japan or United Kingdom better for a family holiday?
For family travel, Japan generally edges ahead due to lower infant mortality (1.8 vs 4.0 per 1,000), which is a useful proxy for healthcare infrastructure and child safety. United Kingdom offers its own advantages, including a more compact geography that is easier to navigate with children. Both cou...
Is Japan or United Kingdom 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 United Kingdom. However, United Kingdom may offer b...
Is Japan or United Kingdom better for retirement?
Japan's life expectancy of 84.0 years suggests stronger healthcare infrastructure, which is a key factor for retirees. United Kingdom may offer a lower cost of living, which stretches pension income further. Key considerations for retirees include visa and residency requirements, healthcare access, ...
Is Japan or United Kingdom more expensive to live in?
United Kingdom's GDP per capita is 1.6x that of Japan, which generally correlates with a higher cost of living. Housing, dining out, and services tend to be more expensive in United Kingdom, while Japan offers more purchasing power per dollar for everyday expenses. However, cost of living varies sig...
Is Japan or United Kingdom better for digital nomads?
For digital nomads choosing between Japan and United Kingdom, key factors include internet infrastructure, visa policies, cost of living, and timezone compatibility with clients. Japan spans 1 timezone while United Kingdom covers 9. Japan's lower cost of living makes it attractive for stretching rem...