Newton per Cubic Metre (N/m³)
Specific weight, or unit weight, is weight per unit volume, γ = ρg. In SI it is in N/m³: water is 9810 N/m³ and concrete about 24,000 N/m³.
Symbol: N/m³ (ASCII: N/m3)
Quantity: specific weight (unit weight) γ = ρg
SI relation: N/m³ is the coherent SI unit of unit weight.
Derivation: Specific (unit) weight γ = ρ g, in N/m³.
Exact: yes, by definition
Typical uses
- Hydrostatic pressure p = γh
- Soil and structural self-weight
- Fluid mechanics problems
Convert newtons per cubic metre to other units
| Conversion | 1 N/m³ equals | Reverse |
|---|---|---|
| newton per cubic metre to kilonewton per cubic metre | 0.001 kN/m³ | kilonewton per cubic metre to newton per cubic metre |
| newton per cubic metre to pcf | 0.006365880354 lbf/ft³ | pcf to newton per cubic metre |
| newton per cubic metre to tonne-force per cubic metre | 0.0001019716213 tf/m³ | tonne-force per cubic metre to newton per cubic metre |
| newton per cubic metre to kilogram-force per cubic metre | 0.1019716213 kgf/m³ | kilogram-force per cubic metre to newton per cubic metre |
| newton per cubic metre to gram-force per cubic centimetre | 0.0001019716213 gf/cm³ | gram-force per cubic centimetre to newton per cubic metre |
| newton per cubic metre to pound-force per cubic inch | 0.000003683958538 lbf/in³ | pound-force per cubic inch to newton 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). Newton per Cubic Metre (N/m³). Retrieved October 29, 2026, from https://scientificconverters.com/units/newton-per-cubic-meter/
IEEE
Scientific Converters, "Newton per Cubic Metre (N/m³)," scientificconverters.com. Accessed: Oct. 29, 2026. [Online]. Available: https://scientificconverters.com/units/newton-per-cubic-meter/