How much visible crust is there on the Earth?

The Earth's visible crust makes up about 1% of the planet's total volume and varies in thickness from about 5 to 70 kilometers (3 to 43 miles) depending on location. It comprises both continental and oceanic crust, with continental crust being thicker and older than oceanic crust. Overall, the crust is a relatively thin layer compared to the underlying mantle and core.