Kilogram per cubic metre
Kilogram per cubic metre (kg/m³) is the SI unit of mass density and mass concentration, equal to one kilogram of mass in one cubic metre of volume.
Kilogram: The SI base unit of mass, defined through the fixed numerical value of the Planck constant. It supplies the mass unit in kg/m³.
Water density: The mass per volume of water, which varies with temperature, pressure, and dissolved substances. Water density is commonly reported in kg/m³.
Gram per cubic centimetre: A mass-density unit equal to one gram per cubic centimetre, or 1,000 kilograms per cubic metre. It expresses the same dimension at a more convenient scale for dense materials.
Dimensional analysis: A method that uses physical dimensions to check equations and derive relationships among quantities. It verifies that mass divided by volume has dimensions of kg/m³.
Cubic metre: The SI derived unit of volume equal to the volume of a cube one metre on each side. It supplies the volume unit in kg/m³.
Air density: The mass per volume of air, affected by temperature, pressure, humidity, and composition. Atmospheric and engineering measurements often express air density in kg/m³.
Kilogram per litre: A mass-per-volume unit equal to 1,000 kilograms per cubic metre. Its litre denominator is often convenient for liquids and solutions.
Unit conversion: The process of expressing a measured quantity in a different unit without changing its value. Conversions connect kg/m³ with g/cm³ and other density units.
Mass density: Mass per unit volume, commonly used to describe how much matter occupies a given space. Kilograms per cubic metre express mass density in SI units.
Bulk density: The mass of a bulk material divided by the volume it occupies, including spaces between particles. Granular materials are often characterized in kg/m³.