Introduction
This Steel Pipe Weight Calculator tells you how much a pipe weighs. Just type in the outer diameter (OD), the wall thickness, and the length. The tool gives you the weight per foot or per meter, plus the total weight of the whole pipe.
You can work in imperial units (inches, feet, pounds) or metric units (millimeters, meters, kilograms). Switch between them any time, and your numbers convert for you. If you need standalone conversions, our mm to inches calculator and kg to lbs calculator handle those quickly. If you use standard pipe sizes, pick an NPS size and schedule from the drop-down list. The OD and wall thickness fill in on their own, and you can still change them.
Pick your material too. The calculator includes carbon steel, stainless steel 304 and 316, aluminum, and galvanized steel. Each one has its own density, so the weight changes to match. For non-pipe shapes, see the metal weight calculator, the steel weight calculator, or the stainless steel weight calculator.
Along with the answer, you get the inner diameter (ID), a table with both metric and imperial results, and a step-by-step solution that shows every formula used. Two charts let you see how weight grows with length and how it changes from one material to another.
Pipe weight matters for shipping costs, crane picks, pipe supports, and load checks. This tool gives you a fast, clear number so you can plan your job with confidence. If you also need the fluid volume inside the line, pair this with the pipe volume calculator.
How to Use Our Steel Pipe Weight Calculator
Enter your pipe size, wall thickness, length, and material. The calculator gives you the weight per unit length, the total pipe weight, the inner diameter, and the density it used.
Unit System: Pick Imperial (in / ft / lb) or Metric (mm / m / kg). Your numbers change over on their own when you switch.
Outer Diameter (OD): Type the distance across the outside of the pipe. Pick the unit you want from the drop-down next to the box. Need the outside distance around the pipe instead? Try the circumference calculator.
Wall Thickness (WT): Type how thick the pipe wall is. It must be less than half the outer diameter, or you will see an error. Use the inches to mm calculator if your wall data is in the other unit system.
Total Pipe Length: Type how long your pipe run is. Pick feet, inches, yards, meters, centimeters, or millimeters. For takeoffs measured on a plan, the linear feet calculator helps you total the run.
Pipe Schedule Auto-Fill: Optional. Pick a standard NPS size and schedule (40, 80, 160, or XXS) to fill in the OD and wall thickness for you. You can still edit both boxes after.
Material / Density: Choose carbon steel, stainless steel 304 or 316, aluminum, or galvanized steel. The density of that metal sets the weight. You can check any custom material with the density calculator.
Calculate and Reset: Click Calculate to see your steel pipe weight results, a full metric and imperial table, the step-by-step math, and two charts. Click Reset to go back to the starting values.
Result Units: Each result box has its own drop-down. Change it to show weight in lb/ft, kg/m, lb, kg, tons, or other units you need.
Steel Pipe Weight: What It Means
Pipe weight is how heavy a piece of pipe is. A pipe is a hollow tube, so only the metal ring around the hole has weight. The more metal in that ring, the heavier the pipe.
Three things set the weight: the outer diameter (OD), the wall thickness (WT), and the length. A fourth thing, the density of the metal, tells you how heavy that metal is for its size.
Key Pipe Terms
- OD – the distance across the outside of the pipe.
- WT – how thick the metal wall is.
- ID – the hole inside. ID = OD − (2 × WT).
- NPS – "nominal pipe size," a name tag like 2" or 6". It is not the real OD for small sizes.
- Schedule – a number like 40, 80, or 160 that sets the wall thickness. Higher schedule means thicker wall, more weight, and higher pressure rating. For one NPS, the OD stays the same and only the wall changes.
How Pipe Weight Is Found
First find the ring of metal, called the cross-section area:
Area = (π ÷ 4) × (OD² − ID²)
This is just the ring between two circles, the same idea used in the circle area calculator. Since the pipe is a hollow cylinder, the metal volume matches what the cylinder volume calculator finds for the outer tube minus the bore.
Then multiply by density to get weight per foot or per meter, and multiply again by the length to get total weight:
Weight per length = Density × Area
Total weight = Weight per length × Length
Quick Shop Formulas
Shops often use these fast checks for carbon steel:
- Pounds per foot = 10.69 × (OD in inches − wall) × wall
- Kilograms per meter = 0.02466 × (OD in mm − wall) × wall
These work well for steel. For other metals, use the real density. Mild steel line pipe sold to Indian and Middle East standards is often checked with the MS pipe weight calculator.
Common Metal Densities
| Material | Density (g/cm³) | Density (lb/in³) |
|---|---|---|
| Carbon Steel | 7.85 | 0.284 |
| Stainless Steel 304 | 8.00 | 0.289 |
| Stainless Steel 316 | 8.03 | 0.290 |
| Aluminum | 2.71 | 0.098 |
Aluminum pipe of the same size weighs about one third as much as steel pipe. For aluminum shapes and plate, the aluminum weight calculator covers more profiles.
Why Pipe Weight Matters
- Shipping cost – trucks and freight are priced by weight. Check the billable figure with the freight class calculator or the volumetric weight calculator.
- Lifting – cranes, slings, and crews need to know the load.
- Supports – hangers, racks, and beams must hold the pipe. Size the steel with the beam deflection calculator and the section modulus calculator.
- Buying steel – pipe is often sold by the pound or kilogram.
Note: this is the weight of the empty pipe. Water, oil, gas, or insulation adds more. Use the pipe volume calculator for the fluid inside and the pipe flow calculator when you also need flow rate or head loss. Welded pipe may also weigh a little more than the chart says, since real walls can vary by a few percent. Related shape tools include the tube weight calculator, the square tube weight calculator, and the sheet metal weight calculator. For bolted flange joints on the line, see the bolt torque calculator.