Steel Weight Calculator
Estimate the weight of steel bars and pipes for fabrication and construction
Select the shape (rectangular bar, round bar, or pipe), enter the required dimensions (in millimeters), the length, quantity, and steel density (default is 7850 kg/m³). The calculator will estimate the weight per piece and the total weight for your order.
The calculator uses the following formulas:
- Rectangular Bar: Volume = Width × Height × Length (all in meters)
- Round Bar: Volume = π × (Diameter ÷ 2)2 × Length (all in meters)
- Pipe: Volume = π × [ (Outer Diameter ÷ 2)2 - (Inner Diameter ÷ 2)2 ] × Length (all in meters)
- Weight = Volume × Density
The total weight is the weight per piece multiplied by the number of pieces.
- Dimensions: Larger bars or pipes weigh more.
- Steel density: Different steel grades may have slightly different densities.
- Quantity: More pieces increase total weight.
- Hollow sections: Pipes are lighter than solid bars of the same size.
- Structural steel fabrication
- Machine parts and supports
- Construction and engineering projects
- Metalworking and manufacturing
- Order a little extra to account for cutting and waste.
- Use proper lifting equipment for heavy pieces.
- Store steel in a dry place to prevent rust.
- Check weights for transport and logistics planning.
How do I calculate the weight of a steel bar or pipe?
The calculator uses the selected shape and your dimensions to compute the volume, then multiplies by the steel's density (default 7850 kg/m³).
What shapes are supported?
You can calculate for rectangular bars, round bars, and hollow pipes. Enter the required dimensions for your shape.
Should I use theoretical or actual dimensions?
Use actual measured dimensions for the most accurate results, especially if the steel has been cut or machined.