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Square Tube Weight Calculator

Weight = (A² − (A−2t)²) × L × density.

Steel SHS Weight (kg/m, side × wall)

A × t | kg/m
40 × 3 | 3.41
50 × 4 | 5.64
80 × 5 | 11.5
100 × 6 | 17.6
150 × 8 | 34.8

Formula

Weight (kg/m) = (A² − (A−2t)²) × ρ × 10⁻⁶ (mm)

Worked Example

100 × 100 × 6 SHS: (100² − 88²) × 7850 × 10⁻⁶ = 17.6 kg/m.

FAQ

How is square tube weight calculated?

Outer area minus inner area, times length times density.