Kilonewton per Cubic Metre (kN/m³)
Kilonewtons per cubic metre are the standard unit of unit weight in soil mechanics and structural design: water 9.81 kN/m³, soils 16–21 kN/m³, plain concrete 24 kN/m³ and reinforced concrete 25 kN/m³ (IS 875 Part 1).
Symbol: kN/m³ (ASCII: kN/m3)
Quantity: specific weight (unit weight) γ = ρg
SI relation: 1 kN/m³ = 1000 N/m³ (exact)
Derivation: 1 kN/m³ = 1000 N/m³.
Exact: yes, by definition
Typical uses
- Soil unit weight in effective-stress and bearing-capacity problems
- Dead loads to IS 875 and Eurocode 1
- Earth-pressure calculations
Convert kilonewtons per cubic metre to other units
| Conversion | 1 kN/m³ equals | Reverse |
|---|---|---|
| kilonewton per cubic metre to pcf | 6.365880354 lbf/ft³ | pcf to kilonewton per cubic metre |
| kilonewton per cubic metre to newton per cubic metre | 1000 N/m³ | newton per cubic metre to kilonewton per cubic metre |
| kilonewton per cubic metre to tonne-force per cubic metre | 0.1019716213 tf/m³ | tonne-force per cubic metre to kilonewton per cubic metre |
| kilonewton per cubic metre to kilogram-force per cubic metre | 101.9716213 kgf/m³ | kilogram-force per cubic metre to kilonewton per cubic metre |
| kilonewton per cubic metre to gram-force per cubic centimetre | 0.1019716213 gf/cm³ | gram-force per cubic centimetre to kilonewton per cubic metre |
| kilonewton per cubic metre to pound-force per cubic inch | 0.003683958538 lbf/in³ | pound-force per cubic inch to kilonewton per cubic metre |
Open the Unit Weight Converter (kN/m³, pcf, kgf/m³) to convert any value between all units.
Sources
- The International System of Units (SI), 9th edition (SI Brochure), Bureau International des Poids et Mesures , Table 4 (derived units) and Table 8 (non-SI units accepted for use with the SI).
Last reviewed: . Factors are stored exactly and computed with 50-digit decimal arithmetic. See how we verify conversion factors.
Cite this page
APA
Scientific Converters. (2026, October 15). Kilonewton per Cubic Metre (kN/m³). Retrieved October 29, 2026, from https://scientificconverters.com/units/kilonewton-per-cubic-meter/
IEEE
Scientific Converters, "Kilonewton per Cubic Metre (kN/m³)," scientificconverters.com. Accessed: Oct. 29, 2026. [Online]. Available: https://scientificconverters.com/units/kilonewton-per-cubic-meter/