Metal Weight
Weight of plate, sheet, bar, tube, and angle from dimensions and material density.
kg/m and lb/ft per section, weight per piece and in total for your lengths and quantities, and a CSV for the quote or the order.
Example: A 10 mm steel plate 1,000 × 2,000 mm weighs 157 kg at 7,850 kg/m³; the same plate in aluminium is 54 kg.
Ideal geometry,
one density.
Every number here can be checked by hand.
How weight is calculated
Mass (kg) = section area (mm²) × length (mm) × density (kg/m³) ÷ 10⁹. Areas use the ideal section: plate and flat bar = width × thickness; round bar = π × d² ÷ 4; square = side²; hex bar = (√3 ÷ 2) × (across-flats)²; round tube = π × wall × (OD − wall); rectangular tube = 2 × wall × (width + height − 2 × wall); angle = thickness × (leg A + leg B − thickness). Inch dimensions are converted at exactly 25.4 mm; lb/ft uses 1 kg = 2.20462 lb and 1 m = 3.28084 ft. Worked example: a 1,000 × 1,000 × 10 mm mild-steel plate weighs 78.5 kg; a 1 in round bar is 2.67 lb/ft.
Why supplier weights differ
Catalogues include corner and root radii, rolling tolerances, and the exact alloy density; this page assumes sharp corners and a typical density per material (editable). An equal angle 50 × 50 × 5 mm computes to 3.73 kg/m here and is listed around 3.77 kg/m by mills — about 1 %. Use supplier data for purchasing and structural work.
What this utility does not do
No beams, channels, or coils yet; no pricing; no cutting plan (for that, hand the profile to Material Planner). Inputs stay in your browser; the same anonymous usage counts as the rest of the site apply.