How to read this Japan vs Korea, Rep. comparison

A side-by-side comparison is most useful when you treat each indicator as a separate question rather than a single verdict on which country is better. Two economies can look close on income yet diverge sharply on life expectancy, schooling, or emissions, because those outcomes depend on policy and history as much as on wealth. Bear in mind that figures may come from different reporting years, that dollar values move with exchange rates, and that national averages conceal regional and household inequality within each country. The most honest reading pairs each headline gap with its direction over time and with related indicators, so a difference becomes a story about how two societies have developed rather than a simple scoreboard between them. According to the World Bank, its World Development Indicators compile more than 1,400 series from national statistical offices; as of May 2026 PlainCountries renders the comparable subset for each country live from that data and the World Health Organization. See our methodology for how every figure is sourced.

Comparing Japan with Korea, Rep. sets two full country profiles side by side across 20 World Bank, WHO, and ILO indicators grouped under 5 thematic areas. Japan sits in East Asia & Pacific with a High income classification, while Korea, Rep. is in East Asia & Pacific with a High income classification. By population, Japan is 2.4x larger than Korea, Rep. (124M versus 51.8M). This initial scale difference is essential context — many absolute totals will inevitably differ, which is why per-capita and percentage indicators often tell the more meaningful story.

Total GDP for Japan is 2.1x larger than for Korea, Rep. ($4.0T versus $1.9T), and each row in the tables above highlights the higher value in accent colour for indicators where higher is better, or the lower value where lower is better (for example, infant mortality, CO₂ per capita, and unemployment). Because both countries share the same World Bank income classification, differences in social and health indicators often reflect policy choices rather than raw economic capacity. Both countries share the same region, so climate, geography, and shared trading partners provide natural control variables.

Every data point links back to its official source: World Bank Open Data for development and demographic indicators, the WHO Global Health Observatory for health and mortality data, and ILO ILOSTAT for wages and hours worked. Indicator years are shown alongside each row so you can flag any reading that is several years old. If you want a different match-up, use the picker below to swap in any of the 217 tracked countries without leaving this page — each new comparison regenerates the full indicator set, highlights, and summary on the fly.