Pipe / tube
kg/m · OD, WT in mm
Weight Calculator
Metal Weight Calculator
Work out the theoretical weight of pipes, bars, plates, angles and hollow sections in 15 materials. Add several items to a list, then send the whole list to us for a quote.
Calculator
Calculate in Two Steps
Choose a shape and material, then enter the dimensions. The result updates as you type.
Your List
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| # | Item | Material | Qty | Weight | Remove |
|---|---|---|---|---|---|
| Total weight | 0 kg | ||||
Formulas
The Maths Behind the Calculator
ρ is the density in g/cm³. All dimensions are in millimetres unless stated.
Round bar
kg/m · D in mm
Square bar
kg/m · A in mm
Hex bar
kg/m · AF = across flats, mm
Flat bar / strip
kg/m · W, T in mm
Sheet / plate
kg · L, W, T in mm
Angle
kg/m · ignores root & toe radii
Square / rect. tube
kg/m · ignores corner radii
Quick rule for carbon steel: pipe = (OD − WT) × WT × 0.02466 kg/m; round bar = D² × 0.00617 kg/m. For other materials multiply by density ÷ 7.85.
Densities
Typical Material Densities
Values used by the calculator. Actual density varies slightly with chemistry and product form.
Density, g/cm³ (columns drawn against a 9 g/cm³ scale)
- Steels
- Nickel alloys
- Light metals
- Copper alloys
- Carbon steel level (7.85)
- 7.85Carbon steel
- 7.93SS 304 / 304L
- 8.00SS 316 / 316L
- 7.92SS 321
- 7.90SS 310S
- 7.80Duplex 2205
- 8.00SS 904L
Steels
- 8.47Inconel 600
- 8.44Inconel 625
- 8.80Monel 400
- 8.89Hastelloy C-276
Nickel alloys
- 4.51Titanium Gr 2
- 2.70Aluminium
Light metals
- 8.96Copper
- 8.50Brass