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Density Converter

Convert between kg/m³, g/cm³, lb/ft³, and other density units.

10 units
6 decimals

1 kg/m³ = 0.001 g/cm³

About the density converter

Convert density between SI (kg/m³, g/cm³), imperial (lb/ft³, lb/in³), and slug-based units. The SI derived unit is the kilogram per cubic meter. Density is mass per unit volume — critical in materials science, fluid mechanics, and engineering design.

Frequently asked questions

  • What is the density of water?

    At 4 °C, pure water has a density of approximately 1,000 kg/m³ or 1 g/cm³.

  • How many kg/m³ is 1 g/cm³?

    Exactly 1,000 kg/m³.

  • How many kg/m³ is 1 lb/ft³?

    Approximately 16.0185 kg/m³.

  • What is the SI unit of density?

    The kilogram per cubic meter (kg/m³).

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Complete list of density units