Rectangular Tube Weight Calculator – RHS Weight per Meter in kg & metric | Free

Engineering & Construction · Structural Steel

Rectangular Tube Weight Calculator — RHS Weight per Meter in kg & Metric

The rectangular tube weight calculator is the go-to tool for structural engineers, fabricators, and contractors who work with Rectangular Hollow Sections (RHS). Whether you need a rectangular tube weight calculator in kg, a rectangular tube weight calculator metric, the rectangular hollow section weight per meter, an RHS weight calculator, an aluminium rectangular tube weight calculator, a tubular steel weight calculator, a steel weight calculator in kg, or the steel tubing weight per foot calculator — this single free tool covers every combination. Enter your tube dimensions, select your material, and get instant accurate weight results.

Rectangular Tube Weight Calculator

Enter width, height, thickness, length & material for instant RHS weight

Material

Unit System

Width — A (mm)

Height — B (mm)

Wall Thickness — T (mm)

Length (meters)

Number of Pieces

—

WEIGHT PER METER (kg/m)

—

Total (kg)

—

Total (lbs)

—

Weight/ft (lbs)

—

Cross Section (mm²)

—

Pieces per Tonne

RHS Weight Chart

Common Rectangular Hollow Section (RHS) Weight Chart — kg/m

Size (A×B mm)	2mm	2.5mm	3mm	4mm	5mm

How To Use

Step-by-Step: Rectangular Tube Weight Calculator

Select Material & Unit

Choose your tube material (MS, Stainless, Aluminium etc.) and unit system — metric (mm) or imperial (inches). The calculator auto-converts imperial inputs to metric for calculation.

Enter Width (A) & Height (B)

Enter the outer dimensions of the rectangular tube. A is the wider face, B is the narrower face. For example, a 100×50mm RHS has A=100 and B=50. Both measured outside-to-outside.

Enter Wall Thickness (T)

Enter the uniform wall thickness in mm or inches. Standard RHS sections typically range from 1.6mm to 12mm thickness depending on the size. Check your section specification sheet.

Get Complete Results

See weight per meter (kg/m), total weight in kg and lbs, weight per foot in lbs, cross-sectional area, and number of pieces per tonne — all essential for procurement and logistics planning.

Formula

Rectangular Hollow Section Weight Formula

Weight/m = [(2×(A+B) − 4×T) × T × Density] ÷ 1000

Where: A = Width (mm) | B = Height (mm) | T = Wall Thickness (mm) | Density = g/cm³
Alternative formula: Weight/m = (A×B − (A−2T)×(B−2T)) × Density ÷ 1000
Example: 100×50mm, 3mm wall, MS: Area = (100×50) − (94×44) = 5000−4136 = 864 mm²
Weight/m = 864 × 7.85 ÷ 1000 = 6.78 kg/m
Weight per foot: kg/m × 0.3048 × 2.20462 = lbs/ft

Smart Features

Why This RHS Weight Calculator is the Best

Metric & Imperial Both

Switch between mm and inches — the calculator auto-converts and gives results in kg/m, lbs/m, and lbs/ft simultaneously. Perfect for projects with mixed unit specifications from Indian and international clients.

Pieces per Tonne

Automatically calculates how many pieces fit in one tonne — extremely useful for procurement orders, transport planning, and cost estimation on construction projects with bulk material requirements.

Built-in RHS Chart

Complete rectangular hollow section weight per meter chart for common sizes (50×25 to 200×100mm) across standard wall thicknesses — no need to calculate for every standard size manually.

FAQ

Rectangular Tube Weight Calculator — People Also Ask

How to calculate rectangular hollow section weight per meter?

Formula: Weight/m = (A×B − (A−2T)×(B−2T)) × Density ÷ 1000. For a 100×50mm RHS with 3mm wall and MS density 7.85: Cross-section = (100×50)−(94×44) = 864 mm². Weight/m = 864×7.85÷1000 = 6.78 kg/m. Use our calculator above for any size — enter dimensions, select material, and get instant results without manual calculation.

What is the RHS weight calculator metric formula?

In metric units (mm and kg): Weight/m = (2(A+B) − 4T) × T × Density ÷ 1000. This simplified formula gives the same result as the full cross-section method. For MS (density 7.85 g/cm³), the constant 0.01570 can be used: Weight/m = 0.01570 × T × (A+B−2T). Select “Metric (mm)” in our calculator for all mm-based input.

How to calculate aluminium rectangular tube weight?

Select “Aluminium — 2.7 g/cm³” from the material dropdown. Aluminium is approximately 2.9× lighter than steel, so a 100×50mm tube with 3mm wall: 864×2.7÷1000 = 2.33 kg/m (vs 6.78 kg/m for MS). Our aluminium rectangular tube weight calculator uses the exact same formula with aluminium’s density, giving you accurate results for structural, automotive, and architectural aluminium sections.

What is steel tubing weight per foot for rectangular sections?

To convert kg/m to lbs/ft: multiply by 0.6720. So a 100×50mm MS tube at 6.78 kg/m = 6.78×0.6720 = 4.56 lbs/ft. Our calculator shows this directly in the results panel — no unit conversion needed. Select “Imperial (inches)” mode to enter dimensions in inches and get lbs/ft directly.

What is the difference between RHS and SHS sections?

RHS (Rectangular Hollow Section) has different width and height dimensions (e.g., 100×50mm), while SHS (Square Hollow Section) has equal width and height (e.g., 50×50mm). Both are governed by IS 4923 in India and EN 10219 in Europe. Use our square tube weight calculator for SHS and this rectangular tube weight calculator for RHS — the formulas differ slightly due to the two different dimensions.

Related Tools

More Engineering & Construction Calculators

Conclusion

Accurate RHS Weight — Any Size, Any Material, Any Unit

From rectangular tube weight in kg metric to steel tubing weight per foot, from MS to aluminium rectangular tube weight — this free RHS weight calculator handles every combination. With a built-in weight chart, pieces-per-tonne output, and both metric and imperial support, it’s the most complete rectangular hollow section weight tool available online. Bookmark it for every fabrication and construction project.