Calculate the weight of steel sections from length, width and thickness — works for plates, sheets, flat bar and box sections. kg output.
| Input | Result |
|---|---|
| 2 m × 1 m × 10 mm plate | 157.0 kg |
| 6 m × 0.3 m × 5 mm flat bar | 70.7 kg |
| stainless (8000 kg/m³), 1 m² × 3 mm | 24.0 kg |
Mild/carbon steel: 7,850 kg/m³. Stainless: 7,900–8,000. Tool steel: 7,700–8,000. Enter your alloy's density in the last field for exact results.
Weight = π × (diameter/2)² × length × density. A 20 mm bar 1 m long weighs π × 0.01² × 1 × 7850 ≈ 2.47 kg.
No — it is theoretical weight. Mill tolerance on thickness (±0.2–0.5 mm on plate) can shift real weights a few percent; order with margin.