Metal Weight Calculator
Calculate total weight and price per piece for steel, stainless steel, aluminum, brass, and copper across all structural shapes.
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How Metal Weight Is Calculated
Metal weight depends directly on the volume of the geometric shape multiplied by the alloy's volumetric mass density:
Plate Weight = Length × Width × Thickness × Density
Round Bar Weight = π × (Diameter / 2)² × Length × Density
Aluminum (0.098 lb/in³) is approximately one-third the weight of steel (0.283 lb/in³), which explains its widespread use in aerospace and transportation.
Frequently Asked Questions
How much does a 4x8 sheet of 1/4" steel plate weigh?
A standard 4 ft by 8 ft (48" x 96") sheet of 1/4" (0.250") mild steel weighs approximately 326 pounds (10.2 lbs per square foot).
How do you calculate weight per square foot for steel plate?
A 1-inch thick steel plate weighs approximately 40.8 lbs per square foot. Multiply 40.8 by the plate thickness (e.g. 0.25 × 40.8 = 10.2 lbs/sq ft).
Is stainless steel heavier than carbon steel?
Yes, slightly. Due to chromium and nickel alloying elements, 304 stainless steel has a density of 0.290 lb/in³ (~2.5% denser than mild carbon steel at 0.283 lb/in³).