Metal Weight Calculator

Weight of plate, tube, round bar, flat bar, angle and pipe by material

Dimensions
Total Weight
0 kg
Unit / Total Weight
⚠️ This calculator is a simple reference tool based on standard engineering formulas. Actual required quantities may differ due to site conditions, material types, construction tolerances, specifications, and changes in applicable regulations. calcstool.com assumes no legal liability for any procurement, design, construction, or other decisions made in reliance on these results, nor for any direct or indirect damages arising therefrom.
FAQ
How is metal weight calculated?
Weight = cross-sectional area × length × density. The area is computed per shape (round πr², tube outer minus inner, plate thickness × width), then multiplied by length and material density. For example, a 10 mm round steel bar weighs about 0.617 kg per meter.
What densities are used?
Steel (SS) 7.85, stainless (STS) 7.93, aluminum 2.70, brass 8.50, copper 8.96, zinc 7.14 g/cm³.
How do I get square tube weight?
For a square/rectangular tube, subtract the inner hollow area from the outer area, then multiply by length and density. Enter width, height and wall thickness and it calculates automatically.
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Metal Weight Calculation

Unit weight is the mass per piece or per meter, used for ordering, shipping and estimating. This tool computes the weight of plate, flat bar, round bar, square bar, square tube, pipe and angle by material density.

Formula

Weight = cross-section area × length × density. Pick a shape to reveal the matching dimension fields, enter length (mm) and quantity, and get unit weight (kg/m), per-piece weight and total (kg, tons) instantly.

Common densities (g/cm³)

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