What Is the Average Depth of the Ocean?

The average depth of the ocean is approximately 14,000 feet (4,267 meters), which is equivalent to 2.65 miles. The average depth of the ocean includes the Pacific, Atlantic, Indian, Southern and Arctic oceans.

The average depth of the Pacific Ocean is 13,740 feet (4,188 meters), while it is 12,254 feet (3,872 meters) for the Atlantic Ocean. The average depth for the Indian Ocean is 12,740 feet (3,872 meters) and 14,763 feet (4,500 meters) for the Southern Ocean. The Arctic Ocean has an average depth of 3,407 feet (1,038 meters).

Oceans cover 72 percent, or about two-thirds, of the Earth's surface.