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Steel Weight Calculator
Calculate the theoretical weight of steel and other metals by shape (round bar, flat bar, pipe, plate, angle, etc.) and material density. Essential for purchasing, shipping estimation and structural calculations.
Calculator
Material Density Reference
| Material | Density (g/cm³) | Density (lb/in³) |
|---|---|---|
| Carbon Steel / Alloy Steel | 7.85 | 0.2836 |
| Stainless Steel 304 | 7.93 | 0.2865 |
| Stainless Steel 316 | 7.98 | 0.2883 |
| Aluminum (6061) | 2.71 | 0.0979 |
| Aluminum (7075) | 2.81 | 0.1015 |
| Copper | 8.96 | 0.3237 |
| Brass (C360) | 8.49 | 0.3067 |
| Titanium (Grade 5) | 4.43 | 0.1600 |
| Cast Iron | 7.20 | 0.2601 |
| Tool Steel | 7.72 | 0.2789 |
| Zinc | 7.13 | 0.2576 |
| Nickel Alloy | 8.19 | 0.2959 |
Weight Formulas by Shape
General: Weight = Volume × Density
- Round Bar: V = (π/4) × d² × L
- Hex Bar: V = (2√3/4) × S² × L (S = width across flats)
- Square Bar: V = a² × L
- Flat Bar: V = W × T × L
- Sheet / Plate: V = W × H × T
- Pipe / Tube: V = (π/4) × (OD² − ID²) × L
- Angle: V = (A + B − T) × T × L
All dimensions in mm. Results are theoretical values based on nominal dimensions and standard material densities. Actual weight may vary ±2–5% due to manufacturing tolerances.