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Kilogram per cubic metre

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Kilogram per cubic metre

Density of the cube: 1 kg/m3

Kilogram per cubic metre is an SI derived unit of density, defined by mass in kilograms divided by volume in cubic metres. The official SI symbolic abbreviation is kg·m−3, or equivalently either kg/m3 or \tfrac{\text{kg}}{\text{m}^3} \!.[1]


  • Conversions 1
  • Relation to other measures 2
  • See also 3
  • References 4
  • External links 5


1 kg/m3 is equivalent to:

= 0.001 g/cm3 (exactly)
≈ 0.06243 lb/ft3 (approximately)
≈ 0.1335 oz/gal (approximately)

1 g/cm3 = 1000 kg/m3 = 1,000,000 g/m3 (exactly)

1 lb/ft3 ≈ 16.02 kg/m3 (approximately)

1 oz/gal ≈ 7.489 kg/m3 (approximately)

Relation to other measures

The kilogram was originally based on the mass of one litre of water, thus the density of water is about 1000 kg/m3 or 1 g/cm3. In chemistry, g/cm3 is more commonly used.

See also


  1. ^ SI brochure, Section 5.1

External links

  • Official BIPM definition of the kilogram
  • Official BIPM definition of the metre
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