kg/m³ to lb/ft³ Converter
Convert kilograms per cubic metre to pounds per cubic foot — divide by 16.018. Results update as you type; exact factors shown.
One kilogram per cubic metre is 0.0624 pound per cubic foot — see the exact factor, not a rounded rule of thumb.
How the kg/m³ to lb/ft³ converter works
Density converts through kg/m³. 1 g/cm³ = 1 kg/L = 1,000 kg/m³ (water at 4 °C). 1 lb/ft³ = 16.0185 kg/m³ and 1 lb/US gal = 119.83 kg/m³. Concrete is about 2,400 kg/m³, steel 7,850 kg/m³, petrol about 740 kg/m³.
Australia is fully metric under the National Measurement Act 1960; imperial units appear only in trade with the US and in older documents.
Common density conversions
| From | To | Units |
|---|---|---|
| 100 kg/m³ | 6.2428 lb/ft³ | kilogram per cubic metre to pound per cubic foot |
| 500 kg/m³ | 31.214 lb/ft³ | kilogram per cubic metre to pound per cubic foot |
| 1,000 kg/m³ | 62.428 lb/ft³ | kilogram per cubic metre to pound per cubic foot |
| 1,500 kg/m³ | 93.6419 lb/ft³ | kilogram per cubic metre to pound per cubic foot |
| 2,000 kg/m³ | 124.8559 lb/ft³ | kilogram per cubic metre to pound per cubic foot |
| 2,400 kg/m³ | 149.8271 lb/ft³ | kilogram per cubic metre to pound per cubic foot |
| 2,700 kg/m³ | 168.5555 lb/ft³ | kilogram per cubic metre to pound per cubic foot |
| 5,000 kg/m³ | 312.1398 lb/ft³ | kilogram per cubic metre to pound per cubic foot |
| 7,850 kg/m³ | 490.0595 lb/ft³ | kilogram per cubic metre to pound per cubic foot |
| 8,960 kg/m³ | 559.3545 lb/ft³ | kilogram per cubic metre to pound per cubic foot |
| 11,340 kg/m³ | 707.9331 lb/ft³ | kilogram per cubic metre to pound per cubic foot |
| 19,300 kg/m³ | 1,204.8596 lb/ft³ | kilogram per cubic metre to pound per cubic foot |
Units in this converter and their exact factors
| Unit | Symbol | One unit in kilogram per cubic metres |
|---|---|---|
| kilogram per cubic metre | kg/m³ | 1 kilogram per cubic metre |
| gram per cubic centimetre | g/cm³ | 1,000 kilogram per cubic metre |
| gram per millilitre | g/mL | 1,000 kilogram per cubic metre |
| kilogram per litre | kg/L | 1,000 kilogram per cubic metre |
| pound per cubic foot | lb/ft³ | 16.018463374 kilogram per cubic metre |
| pound per cubic inch | lb/in³ | 27,679.9047102 kilogram per cubic metre |
| pound per US gallon | lb/US gal | 119.826427317 kilogram per cubic metre |
| ounce per cubic inch | oz/in³ | 1,729.99404 kilogram per cubic metre |
| tonne per cubic metre | t/m³ | 1,000 kilogram per cubic metre |
FAQFrequently asked questions about density conversion
How many lb/ft³ is 1,000 kg/m³?
62.43 lb/ft³ — that is water.
What is 2,400 kg/m³ in lb/ft³?
149.8 lb/ft³, which is normal-weight concrete.
Why convert?
Material data sheets use whichever unit the market expects, and a mixed-source project needs both.
What is timber?
Softwood is roughly 500 kg/m³ or 31 lb/ft³; hardwoods run much higher.
What is 7,850 kg/m³?
Steel, at 490 lb/ft³.
Where these figures come from
- BIPM — The International System of Units (SI Brochure, 9th edition) — definitions of the base and derived units.
- NIST Special Publication 811 — Guide for the Use of the International System of Units — the exact conversion factors used here.
- National Measurement Institute (NMI) — Australia's national measurement authority.
Last checked: September 2026. Conversion factors are fixed by definition and do not change with tax years or regulations.