Mass from volume and density
No moisture correction.
Method
Worked case: 0.5 m³ at 2,400 kg/m³ is 1,200 kg.
What to write beside the result
A review can only check this figure if the inputs sit next to it. Write the value, the unit and the assumption the form used. A diameter in millimetres and a diameter in metres are not the same reading. A force in kilonewtons divided as if it were newtons is a thousand-fold error.
The result is the arithmetic on this page. It is not a utilisation, not a selected product, and not a clause from a standard. If the number is going into a shared container, name the page, the date and the inputs. The file-name checker does not read the calculation.
Logic: how this figure is built.
How to read mass from density
This page answers a quantity question: if the volume is known and the density is known, what is the mass. Mass is volume times density. It is not a weighbridge ticket and not a material specification.
A 0.5 m³ volume at 2,400 kg/m³ is 1,200 kg. The 2,400 figure is a typical dense concrete density used as a screen, not a mix design. Steel is about 7,850 kg/m³. Water is about 1,000 kg/m³. Using the wrong density is the usual error, not the multiplication.
Volume must be the solid volume of the material, not the volume of the hole it sits in if there is a void. A hollow section, a pipe and a trench with side slopes all need the volume worked first. This page does not compute that volume.
Use it after a volume tool, when a delivery note is in tonnes and the model is in cubic metres. Do not use it to claim a reinforcement content or a concrete grade. Grade and density are not the same property.
- Related: concrete volume
- weights and heat
Last checked 3 October 2026. See the disclaimer.