Pounds-force per cubic foot to kilonewtons per cubic meter
Type a value in lbf/ft³ to get it in kN/m³ instantly.
3.77kN/m³
That's 319× as heavy as air, while dry softwood is 1.33× heavier. Under standard gravity that is a density of 384.4 kg/m³.
Convert the other way: kN/m³ to lbf/ft³
What it means
How heavy is that material?
Typical values. Soil depends on moisture and compaction; concrete on its aggregate and reinforcement.
The math
How to convert lbf/ft³ to kN/m³
To convert pounds-force per cubic foot to kilonewtons per cubic meter, multiply by 0.157087.
Example: 24 lbf/ft³ × 0.157087 = 3.7701 kN/m³.
In the other direction, 1 kN/m³ = 6.36588 lbf/ft³.
Every unit
Your specific weight in every unit
Tables
lbf/ft³ to kN/m³ conversion table
| lbf/ft³ | kN/m³ |
|---|---|
| 1 lbf/ft³ | 0.157087 kN/m³ |
| 5 lbf/ft³ | 0.785437 kN/m³ |
| 9.81 lbf/ft³ | 1.54103 kN/m³ |
| 10 lbf/ft³ | 1.57087 kN/m³ |
| 15 lbf/ft³ | 2.35631 kN/m³ |
| 18 lbf/ft³ | 2.82757 kN/m³ |
| 20 lbf/ft³ | 3.14175 kN/m³ |
| 22 lbf/ft³ | 3.45592 kN/m³ |
| 24 lbf/ft³ | 3.7701 kN/m³ |
| 25 lbf/ft³ | 3.92719 kN/m³ |
| 50 lbf/ft³ | 7.85437 kN/m³ |
| 77 lbf/ft³ | 12.0957 kN/m³ |
| 100 lbf/ft³ | 15.7087 kN/m³ |
kN/m³ to lbf/ft³ conversion table
| kN/m³ | lbf/ft³ |
|---|---|
| 1 kN/m³ | 6.36588 lbf/ft³ |
| 5 kN/m³ | 31.8294 lbf/ft³ |
| 9.81 kN/m³ | 62.4493 lbf/ft³ |
| 10 kN/m³ | 63.6588 lbf/ft³ |
| 15 kN/m³ | 95.4882 lbf/ft³ |
| 18 kN/m³ | 114.586 lbf/ft³ |
| 20 kN/m³ | 127.318 lbf/ft³ |
| 22 kN/m³ | 140.049 lbf/ft³ |
| 24 kN/m³ | 152.781 lbf/ft³ |
| 25 kN/m³ | 159.147 lbf/ft³ |
| 50 kN/m³ | 318.294 lbf/ft³ |
| 77 kN/m³ | 490.173 lbf/ft³ |
| 100 kN/m³ | 636.588 lbf/ft³ |
Quick answers
Quick answers
- How many kN/m³ is 1 lbf/ft³?
- 1 lbf/ft³ is 0.157087 kN/m³.
- How many kN/m³ is 10 lbf/ft³?
- 10 lbf/ft³ is 1.57087 kN/m³.
- How many kN/m³ is 24 lbf/ft³?
- 24 lbf/ft³ is 3.7701 kN/m³.
The units
About these units
Pounds-force per cubic foot (lbf/ft³)
US unit weight, often written pcf.
Kilonewtons per cubic meter (kN/m³)
The engineering unit for soil and concrete.
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