PRACTICAL TOOLS · MATERIAL ESTIMATES
Steel Weight Calculator
Estimate theoretical weight of round solid steel bars from diameter, length, count and density.
For round solid bars only. Theoretical mass excludes rolling tolerances, coatings, laps, hooks and cutting waste. Use a whole number of bars.
How the calculation works
Mass = π × (diameter in metres)² ÷ 4 × length × number of bars × density.
Before you order
Measure your project, use consistent units and replace example assumptions with your own product or project specifications. These tools estimate quantities; they do not specify structural design or guarantee purchase quantities.