Density Conversions

Density measures how much mass is packed into a unit of volume, expressed in units like g/cm³ or kg/m³. It is fundamental to material science, fluid dynamics, buoyancy calculations, and chemistry. Converting between density units is necessary when comparing material properties across metric and imperial systems, checking whether materials will float, or calculating the weight of a volume of liquid or solid material.

  • ✓Converting g/cm³ to kg/m³ for SI-standard material property tables
  • ✓Converting lb/ft³ to kg/m³ for international material and insulation specs
  • ✓Checking whether a material will float by comparing its density to water (1 g/cm³)
  • ✓Calculating total weight from volume by multiplying density × volume

Most Popular Density Conversions

g/cm³ → kg/m³kg/m³ → g/cm³lb/ft³ → kg/m³kg/m³ → lb/ft³g/mL → kg/m³kg/L → g/cm³

All Density Converters

Convert from kg/m³ (kg/m³)

kg/m³ → g/cm³kg/m³ → g/mLkg/m³ → kg/Lkg/m³ → lb/ft³kg/m³ → lb/in³

Convert from g/cm³ (g/cm³)

g/cm³ → kg/m³g/cm³ → g/mLg/cm³ → kg/Lg/cm³ → lb/ft³g/cm³ → lb/in³

Convert from g/mL (g/mL)

g/mL → kg/m³g/mL → g/cm³g/mL → kg/Lg/mL → lb/ft³g/mL → lb/in³

Convert from kg/L (kg/L)

kg/L → kg/m³kg/L → g/cm³kg/L → g/mLkg/L → lb/ft³kg/L → lb/in³

Convert from lb/ft³ (lb/ft³)

lb/ft³ → kg/m³lb/ft³ → g/cm³lb/ft³ → g/mLlb/ft³ → kg/Llb/ft³ → lb/in³

Convert from lb/in³ (lb/in³)

lb/in³ → kg/m³lb/in³ → g/cm³lb/in³ → g/mLlb/in³ → kg/Llb/in³ → lb/ft³

Frequently Asked Questions — Density

What is the density of water?
Water has a density of 1 g/cm³ (1 kg/L, or 1,000 kg/m³) at 4°C — the temperature at which water is densest. Seawater is slightly denser at about 1.025 g/cm³. This is the universal reference for specific gravity — objects denser than 1 g/cm³ sink; lighter ones float.
How do I convert g/cm³ to kg/m³?
Multiply g/cm³ by 1,000 to get kg/m³. For example, steel is about 7.85 g/cm³ = 7,850 kg/m³. Aluminum is about 2.70 g/cm³ = 2,700 kg/m³. To reverse, divide kg/m³ by 1,000.
What does lb/ft³ measure and when is it used?
Pounds per cubic foot (lb/ft³) is the US density unit. Common values: air ≈ 0.075 lb/ft³, water ≈ 62.4 lb/ft³, concrete ≈ 150 lb/ft³, steel ≈ 490 lb/ft³. Used in US construction for insulation ratings, lumber grading, soil weight estimates, and HVAC duct sizing.

Related Conversion Categories

Weight Conversions

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Pressure Conversions

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