Convert m³ to kg and kg to m³ using a visible, editable density. Material condition changes the reference density where relevant.
Density is always visible and editable. Presets are reference values, not hidden assumptions.
Density reference and limitations
Bulk density varies with moisture, grading and compaction. Gas density requires known temperature and pressure. Verify product or supplier data before purchasing or engineering use.
Describe the task to the AI assistant and continue from the result.
Open AI assistant →Density is required
Mass equals volume multiplied by density. Volume equals mass divided by density.
Visible assumption
The calculator always shows the density used in kg/m³ and lets you replace it with supplier data.
Important limit
Density can change with moisture, compaction, temperature and pressure. Gas values require stated reference conditions.
Use density for the actual material and state
The same volume can have very different mass depending on the material and its condition. For bulk materials, dry, wet, loose and compacted states can change density. For liquids, use the density for the actual product or concentration; for gases, temperature and pressure matter. Packed goods and mixed waste also contain air gaps, so their bulk density can differ substantially from the density of the solid material itself.