There is no single depth for the Earth's crust. The thickness of the crust varies greatly depending on location:

* Continental crust: This is the thicker crust, ranging from 35 km (22 miles) to 70 km (43 miles) thick.

* Oceanic crust: This is the thinner crust, typically about 5 km (3 miles) to 10 km (6 miles) thick.

So, to answer your question, the depth below the surface for the crust can be anywhere from 5 km (3 miles) to 70 km (43 miles), which translates to 500,000 cm to 7,000,000 cm.