1 cubic meter of granite weighs nearly 3 tons. The density of granite is 2691 kg/m^3. That converts to 2.966 tons (U.S.). read more
Just look up the density, can’t be that hard is it. : Google : granite density answer: 2600–2800 kg/m³ aka 2.6 to 2.8 ton /m³ engineering toolbox . : Densities of Solids NFI, link just for showing list of densities. read more