The United States is larger than Brazil—by total area and land area alike. The numbers tell the story:
| Metric | United States | Brazil | Difference |
|---|---|---|---|
| Total Area | 9,834,000 km² (3,799,000 sq mi) | 8,515,767 km² (3,287,955 sq mi) | US +13% |
| Land Area | 9,161,923 km² (3,537,455 sq mi) | 8,456,510 km² (3,265,054 sq mi) | US +8% |
| Water Area | 672,077 km² (259,490 sq mi) | 59,257 km² (22,880 sq mi) | US +11x |
Brazil fits entirely within the contiguous US with room to spare. But Brazil is larger than the contiguous US (CONUS: 8.08M km²) — a common confusion. The 50-state US is bigger; the "lower 48" is smaller.
Bottom line: USA > Brazil in total & land area. But Brazil is the largest country entirely in the Southern Hemisphere and the 5th largest globally (US is 3rd/4th depending on China coastal claims).