The gram per cubic centimetre is a unit of density in the CGS system, and is commonly used in chemistry. It is defined by dividing the CGS unit of mass, the gram, by the CGS unit of volume, the cubic centimetre. The official SI symbols are g/cm³, g·cm⁻³, or g cm⁻³. It is equivalent to the units gram per millilitre (g/mL) and kilogram per litre (kg/L). The density of water is about 1 g/cm³, since the gram was originally defined as the mass of one cubic centimetre of water at its maximum density at 4 °C (39 °F).

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Quick Facts General information, Unit system ...

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

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1 g/cm³ is equivalent 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)

• Kilogram per cubic metre