62.427961
lb/ft³
1
g/cm³
8.345404
lb/US gal
1
kg/L
62.427961
lb/ft³
1
g/cm³
8.345404
lb/US gal
1
kg/L
The Kilograms per Cubic Meter to Pounds per Cubic Foot Converter translates the SI standard density unit (kg/m³) into the US customary equivalent (lb/ft³). This conversion is essential for construction engineers, material scientists, and architects working between metric and imperial specification systems.
The conversion factor is: 1 kg/m³ = 0.062428 lb/ft³. This derives from two relationships: 1 kg = 2.20462 lb and 1 m³ = 35.3147 ft³. Dividing: 2.20462/35.3147 = 0.062428. So multiplying a kg/m³ value by 0.062428 gives the equivalent in lb/ft³.
Building material densities are commonly specified in both systems. Concrete is about 2,400 kg/m³ (150 lb/ft³), structural steel is 7,850 kg/m³ (490 lb/ft³), and softwood lumber is 400-600 kg/m³ (25-37 lb/ft³). When importing materials or working with international engineering standards, accurate conversion between these units prevents costly errors in structural calculations and material ordering.
Our converter also provides the equivalent in g/cm³ (simply kg/m³ ÷ 1000), which is the standard in chemistry and materials science. Water's density of 1000 kg/m³ = 62.43 lb/ft³ = 1.0 g/cm³ serves as a convenient reference point.
The formula: lb/ft³ = kg/m³ × 0.062428. This factor combines the mass conversion (1 kg = 2.20462 lb) and volume conversion (1 m³ = 35.3147 ft³): 2.20462 / 35.3147 = 0.062428. For g/cm³: g/cm³ = kg/m³ / 1000.
Reference conversions: Water (1000 kg/m³) = 62.43 lb/ft³, Concrete (2400 kg/m³) = 150 lb/ft³, Steel (7850 kg/m³) = 490 lb/ft³, Aluminum (2700 kg/m³) = 168.6 lb/ft³.
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Results
Water = 62.43 lb/ft³
Inputs
Results
Concrete ≈ 150 lb/ft³
Multiply by 0.062428. Example: 2400 kg/m³ × 0.062428 = 149.83 lb/ft³.
Water at 4°C = 62.428 lb/ft³ (1000 kg/m³). At room temperature (20°C), it is approximately 62.32 lb/ft³.
Normal concrete: 2,300-2,400 kg/m³ = 143-150 lb/ft³. Lightweight concrete: 1,400-1,900 kg/m³ = 87-119 lb/ft³.
It combines two conversions: 1 kg = 2.20462 lb (mass) and 1 m³ = 35.3147 ft³ (volume). Dividing: 2.20462 / 35.3147 = 0.062428.
Structural steel: 7,850 kg/m³ = 490 lb/ft³. Stainless steel: 7,750-8,050 kg/m³ = 484-503 lb/ft³.
Density determines dead loads for structural calculations, material weight for transport planning, and buoyancy in marine structures. Incorrect density values can lead to under-designed structures.
Balsa: 120-200 kg/m³ (7.5-12.5 lb/ft³), Pine: 350-600 kg/m³ (22-37 lb/ft³), Oak: 600-900 kg/m³ (37-56 lb/ft³), Ebony: 1,100-1,300 kg/m³ (69-81 lb/ft³).
Dry soil: 1,200-1,700 kg/m³ (75-106 lb/ft³). Compacted soil: 1,600-2,100 kg/m³ (100-131 lb/ft³). Saturated soil: 1,800-2,200 kg/m³ (112-137 lb/ft³).
True density measures solid material only. Bulk density includes void spaces (air pockets between particles). Bulk density is always lower. For granular materials, bulk density is typically 40-70% of true density.
The factor 0.062428 is rounded. The exact value is 2.20462262185/35.3146667215 = 0.062427960576... Our converter uses sufficient precision for all practical applications.
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