Planet
What percentage of Earth's surface is covered by water?
71% water surface
What percentage of Earth's surface is covered by water?
About 71% of Earth's surface is covered by water. However, 97.5% of that is saltwater in the oceans. Of the 2.5% that is freshwater, about 69% is locked in glaciers and ice caps. Only about 0.3% of all freshwater is accessible in lakes, rivers, and groundwater — meaning only 0.0075% of Earth's total water is readily accessible to humans.
Source: USGS Water Resources; UNESCO World Water Development Report