Kilogram per cubic meter (kg/m³)
The SI unit of density; mass in kilograms per cubic meter of volume
The Kilogram per cubic meter (kg/m³) is a unit of density used in scientific, engineering, and practical contexts. Unit standardization in the field of density has evolved over centuries as international scientific bodies and engineering organizations developed consistent measurement frameworks. The International System of Units (SI) provides the modern foundation for most technical measurements, though legacy units from national and industrial traditions continue to be used alongside SI units in many fields. The Kilogram per cubic meter is precisely defined to ensure consistent, reproducible measurements across laboratories and industries worldwide.
Accurate density measurement is critical in engineering, science, commerce, and everyday life. Using the correct unit and applying conversions precisely prevents errors that can be costly or dangerous in professional applications. MegaCalc provides instant, precise conversions for the Kilogram per cubic meter and all related units so you can work confidently across unit systems.
Conversion Table
| Unit | Symbol | 1 kg/m³ = |
|---|---|---|
| Gram per cubic centimeter | g/cm³ | 0.001 g/cm³ |
| Gram per milliliter | g/mL | 0.001 g/mL |
| Pound per cubic foot | lb/ft³ | 0.0624278 lb/ft³ |
| Pound per cubic inch | lb/in³ | 0.0000361273 lb/in³ |
| Pound per gallon | lb/gal | 0.00834543 lb/gal |
| Kilogram per liter | kg/L | 0.001 kg/L |
| Slug per cubic foot | slug/ft³ | 0.00194032 slug/ft³ |
Conversions Involving Kilogram per cubic meter
Kilogram per cubic meter → Gram per cubic centimeter
kg/m³ → g/cm³
Kilogram per cubic meter → Gram per milliliter
kg/m³ → g/mL
Kilogram per cubic meter → Pound per cubic foot
kg/m³ → lb/ft³
Kilogram per cubic meter → Pound per cubic inch
kg/m³ → lb/in³
Kilogram per cubic meter → Pound per gallon
kg/m³ → lb/gal
Kilogram per cubic meter → Kilogram per liter
kg/m³ → kg/L
Kilogram per cubic meter → Slug per cubic foot
kg/m³ → slug/ft³
Gram per cubic centimeter → Kilogram per cubic meter
g/cm³ → kg/m³
Gram per milliliter → Kilogram per cubic meter
g/mL → kg/m³
Pound per cubic foot → Kilogram per cubic meter
lb/ft³ → kg/m³
Pound per cubic inch → Kilogram per cubic meter
lb/in³ → kg/m³
Pound per gallon → Kilogram per cubic meter
lb/gal → kg/m³
Kilogram per liter → Kilogram per cubic meter
kg/L → kg/m³
Slug per cubic foot → Kilogram per cubic meter
slug/ft³ → kg/m³
Common Uses of the Kilogram per cubic meter
- •Material selection — comparing material densities for weight-critical designs
- •Quality control — verifying incoming material by density measurement
- •Fluid mechanics — determining buoyancy and stratification in fluid systems
- •Geology — characterizing rock types and soil compositions
- •Food science — measuring product density for fill-level and quality checks
Did You Know?
The International Bureau of Weights and Measures (BIPM) in Sèvres, France, is the custodian of the International System of Units (SI). The BIPM coordinates global measurement science and maintains the definitions of base units that underpin all scientific and industrial measurement. The Kilogram per cubic meter is part of this global measurement framework that ensures a scientific result in one country means exactly the same thing when replicated in another. This traceability is essential in fields from pharmaceutical manufacturing to aerospace engineering where measurement errors can have serious consequences. Since 2019, all seven SI base units are defined in terms of fundamental physical constants — the speed of light, the Planck constant, the Boltzmann constant, and others — freeing measurement standards from dependence on physical artifacts forever.