Can you convert tons to cubic meters?

Answer 1

There is no way to answer the question if you do not specify the material. Why? Because a cubic meter (or cubic foot, or gallon, or liter, or pint) of crushed stone will weigh more than a cubic meter of Styrofoam. Put another way, a ton of gravel will occupy far less space than a ton of Styrofoam. Crushed stone, for example, has a density of 100 pounds per cubic foot (lb/ft3), which is 1600 kilograms per cubic meter (kg/m3), which is 1.6 metric tons per cubic meter. Packed earth is about 95 lb/ft3, or 1520 kg/m3. If you wish to convert to US tons per cubic meter, use Google. Just type "100 pounds per cubic foot in tons per cubic meter" in the search bar. See the nearby link for densities of common building materials.
You need to know the density of the material concerned
you can't unless you know the density of the material. EG. water has density 1000 kg/m3

so 1 ton water = 103 kg = 1 m3.