Kilogram-force per Cubic Meter (kgf/m³): Definition, Unit of Specific Weight and Conversions
Kilogram-force per cubic meter (symbol: kgf/m³) is a metric unit of specific weight that measures the weight of a material contained within one cubic meter of volume. Unlike mass density, which measures mass per unit volume, specific weight measures force per unit volume and therefore depends on gravitational acceleration.
Definition
One kilogram-force per cubic meter represents the specific weight of a material that exerts a gravitational force of one kilogram-force over a volume of one cubic meter.
1 kgf/m³ = 9.80665 N/m³
Where is Kilogram-force per Cubic Meter Used?
- Civil engineering
- Geotechnical engineering
- Hydraulic engineering
- Construction
- Material testing
- Educational and reference materials
Relationship to Other Specific Weight Units
- 1 kgf/m³ = 9.80665 N/m³
- 1 kgf/m³ = 0.00980665 kN/m³
- 1 kgf/m³ ≈ 0.06242697 lbf/ft³
- 1 kgf/m³ ≈ 0.001 kgf/cm³ × 10⁻⁶
Related Conversions
- Kilogram-force per Cubic Meter to Newton per Cubic Meter
- Kilogram-force per Cubic Meter to Kilonewton per Cubic Meter
- Kilogram-force per Cubic Meter to Pound-force per Cubic Foot
- Newton per Cubic Meter to Kilogram-force per Cubic Meter
Real-World Examples
Although SI units such as newton per cubic meter and kilonewton per cubic meter are now preferred, kilogram-force per cubic meter still appears in legacy engineering documents, educational materials, and specifications based on the gravitational metric system.
Frequently Asked Questions
Is kilogram-force per cubic meter an SI unit?
No. It is a metric engineering unit. The SI unit of specific weight is the newton per cubic meter (N/m³).
What does kgf/m³ measure?
It measures the weight (force) of a material contained in one cubic meter of volume.
How is it related to newtons?
One kilogram-force per cubic meter is equal to 9.80665 newtons per cubic meter.
Conclusion
Kilogram-force per cubic meter is a traditional metric unit of specific weight used in engineering and construction. While SI units are preferred today, kgf/m³ remains useful when interpreting historical data and converting older engineering specifications.