Steel / Metal Weight Calculator
Calculate weight and cost for steel, aluminium, copper, and other metal stock. Supports bars, sheets, plates, and pipes with instant price estimates.
Steel / Metal Weight Calculator
Tips for Accurate Weight Calculation
Use Actual Density
Metal density varies by alloy and grade. The values used are standard averages — confirm with your supplier for critical weight calculations.
Add Processing Weight
Welding, bending, and machining add or remove material. Add 2-5% for processing if precision weight matters.
Check Tolerances
Rolled products have thickness tolerances of ±5-10%. This affects weight calculations for sheets and plates significantly.
Factor in Surface Treatments
Galvanizing adds ~3-6% weight. Powder coating adds ~0.1-0.3mm per side. Paint adds negligible weight.
Frequently Asked Questions
How do I calculate steel weight?
For bars: π × radius² × length × density. For sheets: length × width × thickness × density. The calculator handles all formulas automatically.
What does steel weigh per cubic meter?
Carbon steel: 7,850 kg/m³. Stainless steel 304: 8,000 kg/m³. Aluminium: 2,700 kg/m³. Copper: 8,960 kg/m³.
How accurate is the weight estimate?
Within 3-5% for standard products. Actual weight varies with alloy composition, manufacturing tolerances, and surface treatments.
How do I convert kg to price?
Multiply weight (kg) by price per kg from your supplier. The calculator includes a price field for instant cost estimates.
Need Material Cost Estimates?
Calculate total project cost including waste and material pricing.
Material Cost Calculator