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Aluminum Weight Calculator

Weight per metre and order weight for common extrusion shapes, in 6000-series alloys.

Formula

Aluminum extrusion weight (kg/m) = cross-sectional area (mm²) × density (g/cm³) ÷ 1000. For 6063 and 6061 at 2.70 g/cm³, multiply the area in mm² by 0.0027 — a 40 × 40 × 2 mm square tube (304 mm²) weighs about 0.82 kg/m.

Rectangular aluminum tube 60 × 30 × 2.5 mm, clear anodized — Weight = area × densityCharMax Aluminum

Result

Cross-sectional area: 304.0 mm²
Weight per metre: 0.821 kg/m
Weight per piece: 4.92 kg
Total weight: 492.5 kg

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Formulas

Cross-sectional area by shape

Weight per metre = area (mm²) × density (g/cm³) ÷ 1000. All dimensions in millimetres; t is wall thickness.

Shape	Area (mm²)
Square tube	B² − (B − 2t)²
Rectangular tube	B·H − (B − 2t)(H − 2t)
Round tube	π/4 × (D² − (D − 2t)²)
Angle	t × (A + B − t)
U-channel	W·H − (W − 2t)(H − t)
Flat bar	W × t
Round bar	π/4 × D²

Weight chart

Common sizes

Calculated from nominal sections including corner radii, at 2.70 g/cm³.

Profile	Area (mm²)	kg/m	kg per 6 m
Square Tube 20 × 20 × 1.5 mm	110.5	0.298	1.79
Square Tube 25 × 25 × 2 mm	183.4	0.495	2.97
Square Tube 30 × 30 × 2 mm	223.4	0.603	3.62
Square Tube 40 × 40 × 2 mm	303.4	0.819	4.92
Square Tube 50 × 50 × 3 mm	563.4	1.521	9.13
Rectangular Tube 40 × 20 × 2 mm	223.4	0.603	3.62
Rectangular Tube 50 × 25 × 2 mm	283.4	0.765	4.59
Rectangular Tube 60 × 30 × 2.5 mm	424.4	1.146	6.88
Rectangular Tube 80 × 40 × 3 mm	683.4	1.845	11.07
Rectangular Tube 100 × 50 × 3 mm	863.4	2.331	13.99
Round Tube Ø20 × 2 mm	112.9	0.305	1.83
Round Tube Ø25 × 2 mm	144.3	0.390	2.34
Round Tube Ø32 × 2 mm	188.2	0.508	3.05
Round Tube Ø40 × 3 mm	348.2	0.940	5.64
Round Tube Ø50 × 3 mm	442.3	1.194	7.16
Equal Angle 20 × 20 × 2 mm	76.2	0.206	1.23
Equal Angle 30 × 30 × 3 mm	171.4	0.463	2.78
Equal Angle 40 × 40 × 4 mm	304.8	0.823	4.94
Equal Angle 50 × 50 × 5 mm	476.3	1.286	7.72
Unequal Angle 40 × 20 × 3 mm	171.4	0.463	2.78
U-Channel 20 × 20 × 2 mm	112.2	0.303	1.82
U-Channel 40 × 20 × 2 mm	152.2	0.411	2.47
U-Channel 50 × 25 × 3 mm	282.6	0.763	4.58
U-Channel 60 × 30 × 3 mm	342.6	0.925	5.55

FAQ

Weight calculation questions

How do you calculate the weight of an aluminum extrusion?

Multiply the cross-sectional area by the length and the density. In practical units: weight (kg/m) = area (mm²) × density (g/cm³) ÷ 1000. For 6000-series alloys at 2.70 g/cm³, that is area × 0.0027.

What is the density of 6063 and 6061 aluminum?

About 2.70 g/cm³ for 6061 and 6063 (6063 is sometimes quoted as 2.69), and about 2.71 g/cm³ for 6082.

Why does the actual weight differ from the calculated weight?

Real profiles have corner radii and dimensional tolerances, so actual weight varies slightly — typically within a few percent. For custom profiles, we calculate weight from your exact drawing.

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