How thick is earth's mantle?

Answer 1

Very good question. Many people have been wondering this, actually. How thick is the Earth's mantle? Well, I did some research and found out that the Earth's mantle is about 1800 miles thick, or 2900 kilometers thick. It contains about 80 percent of the Earth's mass. Wow!

Answer 2

The mantle is found between the core and the innermost layer of the earth. The mantle is made up of mostly solid rock that is 1,802 miles thick.