The oceanic crust is about 6-11km thick The continental crust is about 30 km thick
https://lmgtfy.com/?q=What+is+the+length+of+the+earth%27s+crust%3F+Oceanic+and+Continental.&iie=1 ;
The Earth's crust consists of oceanic and continental parts, with oceanic crust averaging 6-11 km thick and continental crust averaging about 30 km. While oceanic crust is thinner and primarily composed of basalt, continental crust is thicker and made mainly of granite. When averaged, the Earth's crust thickness can be estimated around 25 to 30 km.
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