Pipe Weight Calculator
Knowing the exact weight of a pipe is essential before ordering materials, planning transport, or calculating structural loads. Whether you work with carbon steel, stainless steel, copper, or PVC, the weight depends on the outer diameter, wall thickness, and material density.
Our free pipe weight calculator gives you instant results in kilograms per meter or pounds per foot – no manual formulas required. Below you will also find the standard formula, a density table, and a practical example to understand the math behind the tool.
How Do You Calculate Pipe Weight?
The basic formula for pipe weight per unit length is:
Weight = (Outer Diameter – Wall Thickness) × Wall Thickness × Material Coefficient
For carbon steel pipes with dimensions in millimeters and weight in kilograms per meter, the coefficient is 0.02466.
Example: a carbon steel pipe with an outer diameter of 100 mm and a wall thickness of 5 mm:
(100 – 5) × 5 × 0.02466 = 95 × 5 × 0.02466 = 11.7 kg per meter.
Enter your own dimensions into the pipe weight calculator below. Select the material, then provide the outer diameter, wall thickness, and length. The tool instantly computes the total pipe weight and the weight per unit length.
Pipe Weight Formula Explained
The full geometric formula comes from the volume of the pipe wall material. For a hollow cylinder, the cross‑sectional area equals the difference between the outer and inner circles:
W = π × (D – t) × t × ρ × L
Where:
- D – outer diameter
- t – wall thickness
- ρ – material density
- L – length
When D and t are in meters, L in meters, and ρ in kg/m³, W is the weight in kilograms. In practice, engineers often use millimeters and a density‑based coefficient to simplify daily calculations:
W (kg/m) = (OD – WT) × WT × C
with C = π × ρ / 1000 (ρ in g/cm³).
Material Densities and Coefficients
The coefficient C changes with the material because density varies. Here are the most common pipe materials and their values at 20 °C (68 °F).
| Material | Density (kg/m³) | Density (g/cm³) | Coefficient C (for kg/m, mm) |
|---|---|---|---|
| Carbon steel | 7,850 | 7.85 | 0.02466 |
| Stainless steel | 8,000 | 8.0 | 0.02513 |
| Copper | 8,940 | 8.94 | 0.02808 |
| Aluminum | 2,700 | 2.70 | 0.00848 |
| PVC | 1,400 | 1.40 | 0.00440 |
| HDPE | 950 | 0.95 | 0.00298 |
| Brass | 8,500 | 8.50 | 0.02670 |
The calculator uses these exact coefficients internally, so you don’t have to remember them.
Practical Example: Ordering 50 Meters of Steel Pipe
Assume you need 50 meters of carbon steel pipe with a 150 mm outer diameter and an 8 mm wall thickness. The weight per meter is:
(150 – 8) × 8 × 0.02466 = 142 × 8 × 0.02466 ≈ 28.02 kg/m
The total theoretical weight of the order:
50 × 28.02 = 1,401 kg
For transport and lifting equipment, add a 5% safety margin for manufacturing tolerances: about 1,471 kg. This quick check helps you select the right truck or crane before the material arrives.
Disclaimer: This calculator provides nominal weight estimates using standard material densities. Actual weights may vary due to dimensional tolerances and production methods. For critical engineering applications, always refer to the manufacturer’s specifications and applicable standards.