1,000
kg/m³
62.428
lb/ft³
1
t/m³
1,000
kg/m³
62.428
lb/ft³
1
t/m³
The Grams per Cubic Centimeter to Kilograms per Cubic Meter Converter converts between two metric density units: g/cm³ (commonly used in chemistry, geology, and materials science) and kg/m³ (the standard SI unit used in engineering and physics). The conversion factor is exact: 1 g/cm³ = 1000 kg/m³.
The g/cm³ unit is extremely popular because water has a density of approximately 1 g/cm³, making it trivially easy to compare other materials. A material with density 2.7 g/cm³ (aluminum) is 2.7 times heavier than water by volume. This intuitive comparison is why chemistry textbooks, mineral identification guides, and material data sheets commonly use g/cm³.
However, kg/m³ is required for SI-compliant engineering calculations involving forces, pressures, and structural loads. When calculating the weight of a concrete column, the load on a bridge deck, or the buoyancy of a vessel, values must be in kg/m³ to integrate correctly with other SI units (Newtons, Pascals, etc.). The simple factor of 1000 makes this conversion straightforward but essential to get right.
Our converter also provides the equivalent in lb/ft³ for professionals working with US customary units. Common reference values: water = 1.0 g/cm³ = 1000 kg/m³ = 62.43 lb/ft³.
The formula: kg/m³ = g/cm³ × 1000. This is exact because 1 g = 0.001 kg and 1 cm³ = 10⁻⁶ m³, so g/cm³ = (0.001 kg)/(10⁻⁶ m³) = 1000 kg/m³. For lb/ft³: lb/ft³ = g/cm³ × 1000 × 0.062428.
Common densities in g/cm³: Water = 1.00, Aluminum = 2.70, Iron = 7.87, Copper = 8.96, Lead = 11.34, Gold = 19.30, Mercury = 13.53 (liquid).
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1 g/cm³ = 1000 kg/m³
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Aluminum: 2.7 g/cm³ = 2700 kg/m³
Multiply by 1000. The conversion is exact: 1 g/cm³ = 1000 kg/m³.
1 gram = 0.001 kilograms, and 1 cubic centimeter = 0.000001 cubic meters. So 1 g/cm³ = 0.001 kg / 0.000001 m³ = 1000 kg/m³ exactly.
Gold = 19.30 g/cm³ = 19,300 kg/m³. It is one of the densest elements, about 19.3 times heavier than water by volume.
Pure iron = 7.874 g/cm³ = 7874 kg/m³. Steel (an iron alloy) varies: 7,750-8,050 kg/m³ depending on composition.
Yes, exactly. 1 cm³ = 1 mL by definition. So g/cm³ and g/mL are identical units.
Yes, exactly. 1 g/cm³ = 1 kg/L because 1000 cm³ = 1 L and 1000 g = 1 kg.
Because water ≈ 1 g/cm³, making it easy to judge whether a substance sinks or floats and to estimate relative heaviness. Laboratory volumes are commonly measured in mL (= cm³).
Weigh the object in grams, measure its volume in cm³ (by water displacement or geometric calculation). Density = mass / volume.
Aerogel can have densities as low as 0.001 g/cm³ (1 kg/m³). The lightest naturally occurring solid wood is balsa at about 0.12 g/cm³.
Specific gravity = density in g/cm³ (numerically), because the reference (water) is 1 g/cm³. SG 2.7 means density = 2.7 g/cm³ = 2700 kg/m³.
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