FactSentinel

The Amazon rainforest spans approximately 5.5 million square kilometers across nine South American countries, including Brazil, Peru, Colombia, and Bolivia, making it more than three times larger than the second-largest tropical rainforest, the Congo Basin in Central Africa, which covers roughly 2 million square kilometers. This vast expanse represents more than half of the planet's remaining tropical rainforest area, a scale confirmed by satellite imagery, forestry surveys, and data compiled by organizations such as the World Wildlife Fund, NASA, and the United Nations Environment Programme.

The Amazon's dominance in size is tied to the sheer scope of the Amazon River Basin, which provides the hydrological foundation for this dense, biodiverse ecosystem. The basin's size, combined with consistent rainfall and a warm equatorial climate, allows for an unbroken expanse of rainforest that dwarfs other tropical forest systems, including those in Southeast Asia's Borneo and Sumatra region, which together cover a much smaller area.

A common misconception is confusing "largest rainforest" with "largest forest overall." While the Amazon holds the title for tropical rainforests specifically, the Taiga, or boreal forest, stretching across Russia, Canada, and Scandinavia, is actually the largest forest biome on Earth when all forest types are considered, though it is not tropical. Another misconception involves underestimating how much of the Amazon lies outside Brazil, since roughly 40 percent of the rainforest extends into other nations, making it a shared, multinational ecological treasure rather than a single-country feature.