Square Tube Weight Calculator — MS Square Hollow Section Weight per Meter
The square tube weight calculator is the fastest tool for engineers, fabricators and contractors to find the weight of MS (mild steel) or aluminium square hollow sections. Whether you need a MS square tube weight chart in kg, want to compute square tube weight in lbs, calculate a square hollow section weight per meter, check the MS square pipe weight chart, use a steel weight calculator in kg, find the aluminium rectangular tube weight, or run a structural steel weight calculator — this free tool covers all materials and sizes. Simply enter the outer size, wall thickness, and length to get accurate weight results instantly.
MS Square Tube Weight Chart (kg per meter)
| Size (mm) | 2mm thick | 2.5mm thick | 3mm thick | 4mm thick | 5mm thick |
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Step-by-Step: Square Tube Weight Calculator
Select Material
Choose your tube material — MS (Mild Steel), Stainless Steel, Aluminium, Copper, Brass, or enter a custom density. Each material has a different density that directly affects the weight calculation.
Enter Outer Size (A)
Enter the outer dimension of the square tube in millimeters. For example, a 50×50mm square tube has A = 50mm. This is the total outer face width including the wall thickness on both sides.
Enter Wall Thickness (T)
Enter the wall thickness in mm. Common sizes are 1.6mm, 2mm, 2.5mm, 3mm, 4mm, 5mm, and 6mm. Check your tube specification sheet or measure with a vernier caliper.
Enter Length & Quantity
Enter the length in meters and number of pieces. The calculator gives weight per meter, total weight per piece, and grand total for all pieces — in both kg and lbs.
Square Tube Weight Formula Explained
Where: A = Outer size (mm) | T = Wall thickness (mm) | Density = Material density (g/cm³)
Cross-sectional area = A² − (A−2T)² (mm²)
Example: 50×50mm, 3mm thick MS: Area = 50² − 44² = 2500−1936 = 564 mm²
Weight/m = (564 × 7.85) ÷ 1000 = 4.43 kg/m
To convert kg to lbs: multiply by 2.20462
Why Use This Square Tube Weight Calculator
5 Materials Supported
MS, Stainless Steel, Aluminium, Copper, Brass — plus custom density. Works as a steel weight calculator in kg and an aluminium rectangular tube weight calculator in one tool.
kg & lbs Both
Shows weight in both kilograms and pounds simultaneously — eliminating the need for a separate unit converter. Useful for both Indian and international project specifications.
Built-in Weight Chart
Includes a complete MS square tube weight chart for common sizes and thicknesses — so you can cross-check your calculation or look up standard sizes without entering any values.
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Accurate Square Tube Weight — Every Size, Every Material
Whether you need an MS square tube weight chart in kg, a square hollow section weight per meter, or an aluminium square tube weight calculator — this free tool delivers instant, accurate results using the standard IS 4923 formula. Bookmark it for your fabrication projects, share with your team, and eliminate manual weight calculation errors on every job.