Calculate the density of cubic objects from side length and mass, with material identification and unit conversions.
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The Cube Density Calculator computes the physical density of any cubic shape directly from its side length (edge) and measured mass. Because a cube has equal length, width, and height, volume is simply the cube of the edge length ($V = s^3$).
V = s^3 \quad ; \quad \rho = \frac{m}{s^3}Where s is edge length and m is mass. For example, a 10 cm cube has a volume of 1,000 cm³ (1 liter).
Scenario: A solid metal cube with 5 cm sides weighing 981.25 grams.
Side s = 5 cm.
Volume: 5³ = 125 cm³.
Density: 981.25 g / 125 cm³ = 7.85 g/cm³.
Multiply the cube volume (s³) by its known density: m = s³ × ρ.
Pure aluminum has a density of approximately 2.70 g/cm³ (2,700 kg/m³ or 168.6 lbs/ft³).
A cube measuring 1 meter on each side has a volume of 1 cubic meter (1,000 liters) and holds exactly 1,000 kg (1 metric ton or ~2,204.6 lbs) of pure water at 4°C.
For non-cube boxes where length, width, and height differ, use our general Density Calculator or Freight Density Calculator.
Calculate density (ρ = m/V), mass, or volume across metric and imperial units with instant multi-unit conversions.
Calculate pure freshwater and ocean seawater density based on temperature (-5°C to 100°C) and salinity (0 to 40 PSU).
Calculate freight density in pounds per cubic foot (PCF), total cubic feet, and standard NMFC freight class (Class 50 to 500).