Convert kN/m³ to lbs/ft³

1 kN/m³ equals about

6.366 lbs/ft³

How to Convert kN/m³ to lbs/ft³

The kilonewton per cubic meter (kN/m³) is a unit of specific weight (a force per unit volume) widely used in international civil engineering, while pounds per cubic foot (lbs/ft³) is commonly used in the United States both as a density unit and, informally, to express specific weight in soil and material engineering.

The Conversion Formula

To convert a measurement from kN/m³ to lbs/ft³, simply multiply the value by 6.3659:

To convert from lbs/ft³ to kN/m³, perform the inverse operation, multiplying by 0.1571:

Practical Examples

• 9.81 kN/m³ ≈ 62.43 lbs/ft³ (specific weight of water)
• 18 kN/m³ ≈ 114.59 lbs/ft³ (typical specific weight of sandy soil)
• 24 kN/m³ ≈ 152.78 lbs/ft³ (typical specific weight of concrete)
• 77 kN/m³ ≈ 490.18 lbs/ft³ (typical specific weight of steel)

When This Conversion Is Needed

This conversion is highly sought in international civil engineering, where soil mechanics and structural design reports from metric countries (using kN/m³) need to be compared with American specifications (typically using lbs/ft³ for similar purposes).

Other Density Conversions

• • Convert kg/m³ to lbs/ft³
• • Convert lbs/ft³ to kg/m³
• • Convert g/cm³ to lbs/in³
• • Convert lbs/in³ to g/cm³
• • Convert g/mL to lbs/gal
• • Convert lbs/gal to g/mL
• • Convert kg/L to lbs/ft³
• • Convert lbs/ft³ to kg/L
• • Convert lbs/ft³ to kN/m³
• • Convert g/cm³ to kg/m³
• • Convert kg/m³ to g/cm³
• • Convert slugs/ft³ to kg/m³
• • Convert kg/m³ to slugs/ft³
• • Convert kg/m³ to kg/L
• • Convert kg/L to kg/m³
• • Convert oz/in³ to g/cm³
• • Convert g/cm³ to oz/in³
• • Convert lbs/gal to kg/L
• • Convert kg/L to lbs/gal

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