1 cubic meter of granite weighs nearly 3 tons The density of granite is 2691 kg/m^3 That converts to 2966 tons (US) read more Source: quora 0 0 Just look up the density, can't be that hard is it : Google : granite density answer: 2600–2800 kg/m³ aka 26 to 28 ton /m³ engineering toolbox : Densities of Solids NFI, link just for showing list of densities read more .