Gram per cubic centimetre

The gram per cubic centimetre is a unit of density in International System of Units (SI), and is commonly used in chemistry. Its official SI symbols are g/cm³, g·cm⁻³, or g cm⁻³. It is equal to the units gram per millilitre (g/mL) and kilogram per litre (kg/L). It is defined by dividing the gram, a unit of mass, by the cubic centimetre, a unit of volume. It is a coherent unit in the CGS system, but is not a coherent unit of the SI.

gram per cubic centimetre
Density of the cube: 1 g/cm3
General information
Unit system	CGS unit
Unit of	Density
Symbol	g/cm3
Conversions
1 g/cm3 in ...	... is equal to ...
SI units	1,000 kg/m3
Imperial and US Customary units	62.42796 lb/cu ft
MTS units	1 t/m3

The density of water is approximately 1 g/cm³, since the gram was originally defined as the mass of one cubic centimetre of water at its maximum density at approximately 4 °C (39 °F).^[1]

Conversions

• 1 g/cm³ is equal to:

  = 1000 g/L (exactly)

  = 1000 kg/m³ (exactly)

  ≈ 62.4280 lb/cu ft (approximately)

  ≈ 133.5265 oz/US gal (approximately)

• 1 kg/m³ = 0.001 g/cm³(exactly)
• 1 lb/cu ft ≈ 0.01601846 g/cm³ (approximately)
• 1 oz/US gal ≈ 0.00748915 g/cm³ (approximately)

See also

• Kilogram per cubic metre