Instantly calculate the weight and cost of Mild Steel (MS) round pipes for construction, fabrication, and logistics. This professional ms round pipe weight calculator provides accurate estimations based on standard industry formulas.
Standard sizes: 25mm, 50mm, 100mm, etc.
Please enter a valid positive diameter.
Must be less than half of OD.
Thickness must be less than OD/2.
Standard commercial length is often 6m or 12m.
Please enter a valid length.
Total number of pipes required.
Current market rate for Mild Steel.
Total Weight
0.00 kg
Weight Per Meter:0.00 kg/m
Total Length:0.00 m
Estimated Total Cost:0.00
Surface Area (External):0.00 m²
Formula Used: Weight (kg/m) = (OD – Thickness) × Thickness × 0.02466
Weight Analysis Chart
Figure 1: Comparison of your hollow pipe weight vs. a solid round bar of the same diameter.
Specification Breakdown
Metric
Value
Unit
Detailed breakdown of the calculated ms round pipe weight parameters.
What is an MS Round Pipe Weight Calculator?
An ms round pipe weight calculator is an essential digital tool used by engineers, fabricators, and procurement specialists to estimate the mass of Mild Steel (MS) hollow circular sections. Unlike solid bars, pipes have a hollow center, meaning their weight is determined by the volume of the steel shell rather than the full diameter volume.
This calculator is specifically designed for Mild Steel, which has a standard density of approximately 7850 kg/m³. Whether you are planning a structural framework, estimating transport costs, or purchasing raw materials, using an accurate ms round pipe weight calculator ensures you avoid costly estimation errors.
Common misconceptions include assuming that weight scales linearly with diameter alone. In reality, the wall thickness plays a critical role. A pipe with a large diameter but thin wall can weigh significantly less than a smaller pipe with a thick wall.
MS Round Pipe Weight Formula and Mathematical Explanation
To calculate the weight of a mild steel round pipe manually, we use a specific formula derived from the volume of the material and its density. The industry-standard simplified formula for the ms round pipe weight calculator is:
Weight (kg/m) = (OD – WT) × WT × 0.02466
Where:
OD = Outer Diameter in millimeters (mm)
WT = Wall Thickness in millimeters (mm)
0.02466 = Constant factor derived from steel density (7.85 g/cm³) and unit conversions.
Variable Reference Table
Variable
Meaning
Unit
Typical Range
OD
Outer Diameter
mm
15mm – 500mm+
WT
Wall Thickness
mm
1mm – 25mm
L
Length
Meters
6m or 12m (Standard)
ρ (Rho)
Density of MS
kg/m³
~7850
Key variables used in MS pipe weight calculations.
Practical Examples (Real-World Use Cases)
Example 1: Construction Scaffolding
A site engineer needs to order 50 pipes for scaffolding. The specifications are 48.3mm Outer Diameter and 3.2mm Wall Thickness. The standard length is 6 meters.
Follow these simple steps to get an instant estimation:
Enter Dimensions: Input the Outer Diameter (OD) and Wall Thickness in millimeters. Ensure the thickness is not greater than half the diameter.
Set Length: Enter the length of a single pipe in meters. Standard lengths are usually 6m or 12m.
Define Quantity: If you are calculating for a batch, enter the total number of pipes.
Add Price (Optional): To estimate costs, input the current market price per kilogram of Mild Steel.
Analyze Results: The ms round pipe weight calculator will display the weight per meter, total weight, and total cost instantly.
Use the "Copy Results" button to save the data for your procurement orders or engineering reports.
Key Factors That Affect MS Round Pipe Weight Results
When using an ms round pipe weight calculator, consider these six factors that influence the final figures:
Manufacturing Tolerance: Steel mills have production tolerances. The actual wall thickness may vary by ±10%, affecting the actual weight compared to the theoretical weight.
Steel Density Variations: While 7850 kg/m³ is standard for Mild Steel, different grades (like carbon steel vs. alloy steel) may have slight density variations.
Galvanization: If the MS pipe is galvanized (GI pipe), the zinc coating adds approximately 3-5% to the total weight, which a standard ms round pipe weight calculator might not include unless specified.
Weld Seam: ERW (Electric Resistance Welded) pipes have a weld seam that adds a negligible amount of mass, whereas seamless pipes are more uniform.
Corrosion and Rust: Old pipes may weigh less due to material loss from rust, or more if heavily coated with paint or protective layers.
Dimensional Accuracy: Nominal Bore (NB) is different from Outer Diameter (OD). Ensure you are inputting the actual OD, not the nominal bore size, to get accurate results.
Frequently Asked Questions (FAQ)
1. Is this calculator accurate for Stainless Steel (SS) pipes?
No. This ms round pipe weight calculator uses the density of Mild Steel (7.85 g/cm³). Stainless steel is slightly denser (approx 7.9-8.0 g/cm³), so the result would be slightly underestimated.
2. What is the difference between OD and NB?
OD (Outer Diameter) is the actual physical measurement of the outside of the pipe. NB (Nominal Bore) is a standard designation that roughly relates to the internal flow capacity. Always use OD for weight calculations.
3. Why is the factor 0.02466 used?
This factor simplifies the calculation $\pi \times \text{Density}$. It converts the geometry of the pipe (in mm) directly to weight (in kg/m) without needing complex volume steps.
4. Can I calculate the weight of square hollow sections here?
No, this tool is specifically an ms round pipe weight calculator. Square sections require a different formula: $(Width + Height – 2 \times Thickness) \times Thickness \times 0.0157$.
5. Does the calculator account for the weight of paint?
No, the calculation is for the bare metal only. Paint or anti-rust coatings add negligible weight for small quantities but should be considered for massive pipelines.
6. How do I convert feet to meters for this calculator?
Multiply your length in feet by 0.3048 to get meters. For example, a 20-foot pipe is $20 \times 0.3048 = 6.096$ meters.
7. What if my thickness is in Gauge (SWG)?
You must convert SWG to millimeters first. For example, 10 SWG is approx 3.2mm, and 16 SWG is approx 1.6mm.
8. Why is the result different from the weighing scale?
Theoretical weight assumes perfect geometry. Real pipes have ovality, thickness variations, and length tolerances that cause slight discrepancies from the calculated value.
Related Tools and Internal Resources
Explore our other engineering and estimation tools to assist with your projects:
Steel Weight Chart – Comprehensive reference charts for standard steel sections.