Density, Mass and Volume Calculator (ρ = m/V)

Use it to determine a sample's density from its mass and volume; calculate the mass contained in a known volume of a reagent; find the volume occupied by a given mass; convert a tabulated density into the units required by another calculation; or make a preliminary comparison with reference substances. When density is already known, the catalog can load it together with its stated conditions.

The central relationship is ρ = m/V; rearranging it gives m = ρ·V and V = m/ρ. Every unit passes through an SI hub —kg, m³ and kg/m³—, so changing a selector re-expresses the number without changing the physical quantity. In particular, 1 g/cm³ = 1 g/mL = 1 kg/L = 1 t/m³ = 1000 kg/m³, and 1 g/L = 1 kg/m³. Relative density is the dimensionless ratio between the substance density and a reference: conventional water at 1000 kg/m³ and 4 °C, ISA air at 1.225 kg/m³ and 15 °C, or a custom value. The catalog states the conditions for each entry, and a hit is reported as “compatible with” within 2 % because density alone cannot identify a material.

Mass, volume and density must be greater than zero. Incomplete inputs leave the calculation pending; invalid, ambiguous or out-of-range values are rejected explicitly. The tool does not correct density for temperature or pressure, calculate mixtures or uncertainty propagation, or convert weight into mass. To interpret a ratio against air as vapour density, both densities must refer to the same temperature and pressure.

• Density · 25 g occupy 10 cm³25 g / 10 cm³ = 2.5 g/cm³ = 2500 kg/m³
• Mass · mercury at 13595 kg/m³ in 1 L13595 kg/m³ × 0.001 m³ = 13.595 kg
• Volume · 1 kg of conventional water1 kg / 1000 kg/m³ = 0.001 m³ = 1 L