Largest Economies in 2026: US vs China vs India GDP Compared

The United States leads with $32.4 trillion in nominal GDP in 2026. China is #2 at $20.9 trillion nominal — but #1 by PPP at $43.5 trillion. India ranks 6th nominally at $4.2 trillion (INR depreciation suppresses its dollar value) but 3rd by PPP at $19.1 trillion, reflecting its actual economic scale with 1.4 billion people. India is the fastest-growing large economy at 6.5% annually. The metric that matters depends on the question: use nominal GDP for financial and trade comparisons, PPP for understanding real output and purchasing power.