Kilogram/cubic meter to Pound/cubic foot Converter
Enter the value that you want to convert kilogram/cubic meter (kg/m³) to pound/cubic foot (lb/ft³) or pound/cubic foot to kilogram/cubic meter.Also written as KG/M³ to LB/FT³ conversion.
1 kilogram/cubic meter = 0.0624280 pound/cubic foot
Formula: pound/cubic foot = kilogram/cubic meter value × 0.0624280
KG/M³ to LB/FT³ — kilogram/cubic meter to pound/cubic foot
10 kilogram/cubic meter = 0.62428 pound/cubic foot
Popular Density Converters:
How Kilogram/cubic meter Relates to Pound/cubic foot
The Kilogram/cubic meter in Engineering
Kilogram/cubic meter (kg/m³) is a unit of density measurement. 1 kilogram/cubic meter is equal to 0.0624280 pound/cubic foot.
The Pound/cubic foot in Engineering
Pound/cubic foot (lb/ft³) is a unit of density measurement. 1 pound/cubic foot is equal to 16.0184630 kilogram/cubic meter.
Density Conversions in Materials Science
Density units vary by industry: chemists use g/mL or g/cm³, engineers use kg/m³, and American petroleum standards use lb/ft³ or lb/gal. Quality control in manufacturing, buoyancy calculations in naval architecture, concrete mix design, and oil/gas well logging all require converting between density units. Different countries and standards bodies specify materials in different density units.
kilogram/cubic meter to pound/cubic foot metric conversion table
| 0.01 kg/m³ | = | 0.00062 lb/ft³ |
| 0.1 kg/m³ | = | 0.00624 lb/ft³ |
| 1 kg/m³ | = | 0.06243 lb/ft³ |
| 2 kg/m³ | = | 0.12486 lb/ft³ |
| 3 kg/m³ | = | 0.18728 lb/ft³ |
| 4 kg/m³ | = | 0.24971 lb/ft³ |
| 5 kg/m³ | = | 0.31214 lb/ft³ |
| 6 kg/m³ | = | 0.37457 lb/ft³ |
| 7 kg/m³ | = | 0.43700 lb/ft³ |
| 8 kg/m³ | = | 0.49942 lb/ft³ |
| 9 kg/m³ | = | 0.56185 lb/ft³ |
| 10 kg/m³ | = | 0.62428 lb/ft³ |
| 11 kg/m³ | = | 0.68671 lb/ft³ |
| 12 kg/m³ | = | 0.74914 lb/ft³ |
| 13 kg/m³ | = | 0.81156 lb/ft³ |
| 14 kg/m³ | = | 0.87399 lb/ft³ |
| 15 kg/m³ | = | 0.93642 lb/ft³ |
| 16 kg/m³ | = | 0.99885 lb/ft³ |
| 17 kg/m³ | = | 1.06128 lb/ft³ |
| 18 kg/m³ | = | 1.12370 lb/ft³ |
| 19 kg/m³ | = | 1.18613 lb/ft³ |
| 20 kg/m³ | = | 1.24856 lb/ft³ |
| 30 kg/m³ | = | 1.87284 lb/ft³ |
| 40 kg/m³ | = | 2.49712 lb/ft³ |
| 50 kg/m³ | = | 3.12140 lb/ft³ |
| 60 kg/m³ | = | 3.74568 lb/ft³ |
| 70 kg/m³ | = | 4.36996 lb/ft³ |
| 80 kg/m³ | = | 4.99424 lb/ft³ |
| 90 kg/m³ | = | 5.61852 lb/ft³ |
| 100 kg/m³ | = | 6.24280 lb/ft³ |
| 200 kg/m³ | = | 12.48559 lb/ft³ |
| 300 kg/m³ | = | 18.72839 lb/ft³ |
| 400 kg/m³ | = | 24.97118 lb/ft³ |
| 500 kg/m³ | = | 31.21398 lb/ft³ |
| 600 kg/m³ | = | 37.45678 lb/ft³ |
| 700 kg/m³ | = | 43.69957 lb/ft³ |
| 800 kg/m³ | = | 49.94237 lb/ft³ |
| 900 kg/m³ | = | 56.18517 lb/ft³ |
| 1000 kg/m³ | = | 62.42796 lb/ft³ |
How to Convert KG/M³ to LB/FT³ (Kilogram/cubic meter to Pound/cubic foot)?
We can convert kilogram/cubic meter to pound/cubic foot by using an example.
Example:
Convert 20 Kilogram/cubic meter to Pound/cubic foot?
We know 1 Kilogram/cubic meter = 0.0624280 pound/cubic foot; 1 Pound/cubic foot = 16.0184630 kilogram/cubic meter.
20 kilogram/cubic meter = ___lb/ft³
20 × 0.0624280 = 1.24856 lb/ft³ (we know 1 kilogram/cubic meter = 0.0624280 pound/cubic foot)
Answer:
20 kilogram/cubic meter = 1.24856 pound/cubic foot
Converting kg/m³ to lb/ft³: SI to Imperial Density
When working with US construction codes, HVAC specifications, or soil reports, you often need to convert the SI density unit (kg/m³) to pounds per cubic foot (lb/ft³). The conversion factor is 1 kg/m³ = 0.0624280 lb/ft³. This factor accounts for both the mass conversion (kg to lb) and the volume conversion (m³ to ft³).
- Start with the density in kg/m³.
- Multiply by 0.0624280 to convert to lb/ft³.
- Alternatively, divide by 16.0185 for the same result.
- Verify with water: 1,000 kg/m³ × 0.0624280 = 62.428 lb/ft³ (the well-known density of water in imperial units).
Density Values: kg/m³ and lb/ft³ Side by Side
Construction materials and soils commonly referenced in US building codes:
| Kilogram/cubic meter | Pound/cubic foot |
|---|---|
| 1,000 kg/m³ | 62.43 lb/ft³ |
| 2,400 kg/m³ | 149.8 lb/ft³ |
| 7,850 kg/m³ | 490.0 lb/ft³ |
| 2,700 kg/m³ | 168.6 lb/ft³ |
| 1,600 kg/m³ | 99.9 lb/ft³ |
| 2,000 kg/m³ | 124.9 lb/ft³ |
| 32 kg/m³ | 2.0 lb/ft³ |
| 600 kg/m³ | 37.5 lb/ft³ |
Worked Examples: kg/m³ to lb/ft³
Question 1: A geotechnical report lists soil density as 1,850 kg/m³. What is this in lb/ft³ for a US building permit?
Solution:
Density in lb/ft³ = kg/m³ × 0.0624280
= 1,850 × 0.0624280
= 115.5 lb/ft³
Answer: 1,850 kg/m³ = 115.5 lb/ft³ — well-compacted fill material suitable for foundations.
Question 2: Rigid foam insulation board has a density of 48 kg/m³. Convert to lb/ft³.
Solution:
Density in lb/ft³ = kg/m³ × 0.0624280
= 48 × 0.0624280
= 3.0 lb/ft³
Answer: 48 kg/m³ = 3.0 lb/ft³ for XPS foam insulation.
Question 3: Lightweight aggregate concrete has a density of 1,400 kg/m³. Express in lb/ft³.
Solution:
Density in lb/ft³ = kg/m³ × 0.0624280
= 1,400 × 0.0624280
= 87.4 lb/ft³
Answer: 1,400 kg/m³ = 87.4 lb/ft³ — about 60% the weight of normal concrete, used for reducing dead loads in multi-story structures.
Practice: kg/m³ to lb/ft³ Conversions
Try solving these on your own to test your understanding:
- Convert 2,500 kg/m³ (sandstone) to lb/ft³. (Answer: 156.1 lb/ft³)
- Express 800 kg/m³ (dry sand) in lb/ft³. (Answer: 49.9 lb/ft³)
- Asphalt at 2,360 kg/m³ — find in lb/ft³. (Answer: 147.3 lb/ft³)
- Expanded polystyrene at 25 kg/m³ — convert. (Answer: 1.56 lb/ft³)
- Brick at 1,920 kg/m³ — express in lb/ft³. (Answer: 119.9 lb/ft³)
Where This Conversion Appears in US Construction
American Concrete Institute (ACI) codes specify concrete densities in lb/ft³ while international suppliers provide data in kg/m³. Structural engineers converting between systems must be precise: a 5% error in concrete density translates to a 5% error in dead load calculations, potentially affecting beam sizing and foundation design. ASTM standards also reference lb/ft³ for soil classification and compaction testing.
Insulation R-Values and Density
Insulation performance (R-value per inch) is closely related to density in lb/ft³. Fiberglass batts at 0.5–1.0 lb/ft³ offer R-3.1 to R-3.7 per inch, while dense-pack cellulose at 3.5 lb/ft³ achieves R-3.7 per inch. Spray foam at 1.75–2.0 lb/ft³ (closed-cell) delivers R-6.5 per inch. Understanding the density–performance relationship helps specify the right insulation for energy-efficient buildings.
Key Takeaways
- 1 kg/m³ = 0.0624280 lb/ft³ (multiply by 0.0624).
- Water = 62.43 lb/ft³ is the reference benchmark in imperial units.
- US building codes use lb/ft³ for concrete, soil, and insulation specifications.
- For quick estimates: divide kg/m³ by 16.
- Precision matters: small density errors compound in structural calculations.
Kilogram/cubic meter to Pound/cubic foot Conversion Formula
pound/cubic foot = kilogram/cubic meter × 0.0624280
1 kilogram/cubic meter = 0.0624280 pound/cubic foot
1 pound/cubic foot = 16.0184630 kilogram/cubic meter
Reverse: kilogram/cubic meter = pound/cubic foot × 16.0184630
Frequently Asked Questions
How many pound/cubic foot are in 1 kilogram/cubic meter?
There are 0.0624280 pound/cubic foot in 1 kilogram/cubic meter. To convert kilogram/cubic meter to pound/cubic foot, multiply the value by 0.0624280.
How do I convert kilogram/cubic meter to pound/cubic foot?
Multiply your kilogram/cubic meter value by 0.0624280 to get the equivalent in pound/cubic foot. For example, 5 kilogram/cubic meter = 5 × 0.0624280 = 0.31214 pound/cubic foot.
How do I convert pound/cubic foot to kilogram/cubic meter?
Multiply your pound/cubic foot value by 16.0184630 to get the equivalent in kilogram/cubic meter. Alternatively, divide by 0.0624280.
What is 10 kilogram/cubic meter in pound/cubic foot?
10 kilogram/cubic meter is equal to 0.62428 pound/cubic foot.
What is 100 kilogram/cubic meter in pound/cubic foot?
100 kilogram/cubic meter is equal to 6.24280 pound/cubic foot.