What density is used for lead?

The calculator uses the standard density of lead: 11.34 g/cm³ (11,340 kg/m³ or 0.4097 lb/in³). This is the widely accepted value for pure lead at room temperature.

How is the pipe weight calculated?

Weight = Cross-section area × Length × Density. The cross-section area of a hollow pipe is π/4 × (OD² − ID²), where ID = OD − 2 × wall thickness.

What if I only know the inner diameter?

Use ID = OD − 2 × wall thickness, or rearrange: OD = ID + 2 × wall thickness. Enter the computed OD and the same wall thickness.

Can I use this for lead alloys?

For pure lead, 11.34 g/cm³ is accurate. Common lead alloys vary slightly — for example, lead-antimony (hard lead) is about 10.9–11.0 g/cm³. For high-precision work, use the alloy-specific density.

Why does wall thickness matter so much?

Because lead is very dense, even a small change in wall thickness significantly affects weight. A 1 mm increase in wall thickness on a 50 mm OD pipe raises weight by roughly 15%.

Lead Pipe Weight Calculator

Name: Lead Pipe Weight Calculator
Availability: InStock
Author: Nham Vu

Enter the outer diameter, wall thickness, and length of a lead pipe to instantly get its weight in kilograms and pounds.

Pipe Dimensions

Unit system:

Outer Diameter (OD) (mm)

Wall Thickness (mm)

Length (m)

Results

Enter dimensions and click Calculate

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Summary

Enter the outer diameter, wall thickness, and length of a lead pipe to instantly get its weight in kilograms and pounds.

How it works

Enter the outer diameter of the lead pipe.
Enter the wall thickness (must be less than half the outer diameter).
Enter the total pipe length.
Select your unit system — metric (mm/m) or imperial (in/ft).
The calculator derives the inner diameter, computes the annular cross-section area, multiplies by length and lead density (11.34 g/cm³), and returns weight in kg and lb.

Use cases

Estimate weight of lead pipes for radiation shielding enclosures.
Calculate material cost by weight before ordering lead stock.
Determine dead load contribution of lead pipework in structural analysis.
Verify shipping weight for freight and handling cost estimation.
Compare weight across different wall thickness options for a design.
Cross-check fabrication specs against weight budgets.
Quick sanity-check during plumbing or HVAC planning involving lead.
Confirm weights for hazardous material transport documentation.

Frequently Asked Questions

Last updated: 2026-06-11 · Reviewed by Nham Vu