Convert Pounds per cubic foot to Tonnes per cubic metre
Convert Pounds per cubic foot (lb/ft³) to Tonnes per cubic metre (t/m³) instantly and accurately.
Conversion Formula
t/m³ = lb/ft³ × 0.01601846337
About Pounds per cubic foot
The pound per cubic foot (lb/ft³) equals ≈16.018 kg/m³, widely used in US construction, soil mechanics, and insulation specifications. Softwood framing lumber averages 25-35 lb/ft³; compacted soil 90-130 lb/ft³; fresh water ≈62.43 lb/ft³; concrete 145-150 lb/ft³. ASTM standards for concrete, soil, and geotextiles routinely cite lb/ft³. 1 lb/ft³ = 0.45359237/0.028316846592 kg/m³ ≈16.018 kg/m³.
About Tonnes per cubic metre
The tonne per cubic metre (t/m³) equals 1000 kg/m³, coincident with g/cm³ and kg/L. Geotechnical engineering specifies bulk unit weights in t/m³: saturated clay 1.8-2.2 t/m³, dry sand 1.4-1.7 t/m³, reinforced concrete 2.4-2.5 t/m³. Bulk-material handling uses t/m³ for conveyor and silo capacity calculations, yielding mass in tonnes directly from volume in m³. 1 t/m³ = 1000 kg/m³ = 1 g/cm³.
Quick Reference Table
| Pounds per cubic foot (lb/ft³) | Tonnes per cubic metre (t/m³) |
|---|---|
| 1 lb/ft³ | 0.0160185 t/m³ |
| 2 lb/ft³ | 0.0320369 t/m³ |
| 5 lb/ft³ | 0.0800923 t/m³ |
| 10 lb/ft³ | 0.160185 t/m³ |
| 25 lb/ft³ | 0.400462 t/m³ |
| 50 lb/ft³ | 0.800923 t/m³ |
| 100 lb/ft³ | 1.60185 t/m³ |