Steel Weight Calculator
Enter the bar diameter, the length of one bar and how many bars you have.
Your result will appear here after you press Calculate.
How this calculator works
Weight per metre = (π ÷ 4) × d² × density, with d in metres and density 7850 kg/m³.
With d in millimetres this is approximately d² ÷ 162.2 kg per metre.
Total weight = weight per metre × length of one bar × number of bars
Assumptions and limits
- Theoretical weight uses a density of 7850 kg/m³ (editable). Actual bar weight varies within the tolerances of the applicable standard.
- Rib and tolerance effects are not modelled.
This tool gives an approximate estimate from the values you enter. It is not a substitute for professional engineering design, site inspection, official quotations or applicable building regulations. See the calculator disclaimer.