Density to Mass Calculator
Find the mass of any material or object: enter its density (kg/m³) and the volume it occupies (m³), and get the mass in kilograms, grams, and tonnes instantly.
kg/m³
m³
m = ρ × V — mass equals density times volume
1
kg- 1
Mass formula
ρ × Vm = ρ × V — multiply density by volume to get mass. - 2
Mass (kg)
1,000 × 0.001 = 1
How does this calculator work?
Multiply density (kg/m³) by volume (m³) to get mass (kg): m = ρ × V. For example, 0.002 m³ of aluminium at 2 700 kg/m³ gives mass = 5.4 kg. The result also appears in grams and tonnes for convenience. Specific gravity (density ÷ 1 000) is shown as a dimensionless reference.
Formula
How this is calculated
Mass and density are related through volume by the formula m = ρ × V. Density (ρ) is the amount of mass per unit volume — an intrinsic property of the material — while volume (V) is the space the sample occupies. Multiplying them gives the total mass (m).
Inputs use SI base units: density in kilograms per cubic metre (kg/m³) and volume in cubic metres (m³), so the result is in kilograms. The calculator also shows the result in grams (×1 000) and metric tonnes (÷1 000). A common conversion: 1 litre = 0.001 m³, so a 1-litre water sample (ρ = 1 000 kg/m³) has mass = 1 000 × 0.001 = 1 kg. Specific gravity (ratio to water density of 1 000 kg/m³) is shown as a dimensionless comparison.
The formula gives the total bulk mass of a uniformly dense sample. For objects with voids, layered construction, or spatially varying composition, the formula yields an approximation using the effective average density.
Frequently asked questions
Mass equals density multiplied by volume: m = ρ × V. For example, 2 m³ of steel (ρ ≈ 7 850 kg/m³) has mass = 7 850 × 2 = 15 700 kg.
Divide litres by 1 000: 1 litre = 0.001 m³. So 500 litres = 0.5 m³, and a 10-litre volume of aluminium (ρ = 2 700 kg/m³) has mass = 2 700 × 0.01 = 27 kg.
Water: 1 000 kg/m³; aluminium: ~2 700 kg/m³; concrete: ~2 300 kg/m³; steel: ~7 850 kg/m³; lead: ~11 340 kg/m³; gold: ~19 300 kg/m³; oak wood: ~700 kg/m³; air at sea level: ~1.225 kg/m³.
Also known as
TG we-Calculate Editorial Team. (2026). Density to Mass Calculator [Online calculator]. TG we-Calculate. https://we-calculate.com/calculator/density-to-mass-calculator
TG we-Calculate Editorial Team. "Density to Mass Calculator." TG we-Calculate. 2026. https://we-calculate.com/calculator/density-to-mass-calculator.
TG we-Calculate Editorial Team, "Density to Mass Calculator," TG we-Calculate, 2026. [Online]. Available: https://we-calculate.com/calculator/density-to-mass-calculator
@misc{wecalculate_density_to_mass_calculator, title = {Density to Mass Calculator}, author = {{TG we-Calculate Editorial Team}}, howpublished = {\url{https://we-calculate.com/calculator/density-to-mass-calculator}}, year = {2026}, note = {TG we-Calculate} }
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