Pipe Weight Calculator
Use this pipe weight calculator for round pipe, square tube, and rectangular tube material takeoffs. Enter outside size, wall thickness, length, material, quantity, waste, and optional price.
Results
This calculator estimates pipe and tube material weight only. It does not calculate liquid volume, flow, pressure rating, load capacity, or pipe span. Actual weight can vary by material grade, wall tolerance, coatings, and supplier specs.
How to use this calculator
- 01Choose the pipe or tube material.
- 02Choose round pipe, square tube, or rectangular tube.
- 03Enter the outside size, wall thickness, and length per piece.
- 04Enter quantity and waste percentage.
- 05Open the cost section if you want material cost from price per pound or kilogram.
- 06Read inside size, wall area, material volume, weight per length, total weight, and density used.
Understanding the math
Pipe weight is wall area times length times density. The calculator subtracts the hollow inside area from the outside area, multiplies by length, applies the selected material density, then adds quantity and waste.
Round wall area = pi x (outside diameter2 - inside diameter2) / 4 Square wall area = outside side2 - inside side2 Rectangular wall area = outside width x outside height - inside width x inside height Volume = wall area x length Weight = volume x density With waste = total weight x (1 + waste percent / 100)
Example: a 4 in OD steel pipe with a 0.25 in wall has a 3.5 in inside diameter and about 2.945 in2 of wall area. At 96 in long and 0.283 lb/in3, it weighs about 80 lb, or about 10 lb/ft. With 5% waste, the order weight is about 84 lb.
This page estimates pipe and tube material weight. If you need gallons or liters inside a pipe, use the Pipe Volume Calculator. For broader metal shapes, use the Metal Weight Calculator.
Pipe weight quick reference
Use these values as a starting point. If your supplier lists a material-specific density or exact wall thickness, use those values in the calculator.
| Item | Value | Notes |
|---|---|---|
| Carbon / mild steel density | 0.283 lb/in3 | Common steel pipe default |
| Stainless steel density | 0.289 lb/in3 | Use for stainless pipe or tube |
| Aluminum density | 0.0975 lb/in3 | Common aluminum estimate |
| PVC density | 0.052 lb/in3 | PVC varies by formulation |
| Ton conversion | 2000 lb | Short ton in imperial, metric tonne in metric |
| Round pipe formula | Wall area x length x density | Wall area = pi x (OD2 - ID2) / 4 |
| Steel pipe shortcut | lb/ft = 10.69 x wall x (OD - wall) | Shortcut is for steel pipe in imperial units |
Frequently asked questions
How do you calculate pipe weight?
Calculate the pipe wall area from outside size and wall thickness, multiply by length to get material volume, then multiply by density.
How much does steel pipe weigh per foot?
It depends on outside diameter and wall thickness. In Imperial units, a common steel shortcut is about 10.69 x wall thickness x (outside diameter - wall thickness), giving lb/ft.
What is the weight of 2 inch by 2 inch pipe?
That is square tube intent. Choose Square tube, enter 2 in outside side size, then add wall thickness, length, and material.
Are pipe weight calculators accurate?
They are accurate enough for takeoff estimates when outside size, wall thickness, length, and density are correct. Actual weight can vary by material grade, wall tolerance, coating, and supplier specs.
Can I use this calculator with metric measurements?
Yes. Use the Imperial / Metric toggle. Inputs, results, examples, and the reference table follow the active unit system where applicable.