What formula is used to calculate brass pipe weight?

The formula is: Weight = (π ÷ 4) × (OD² − ID²) × Length × Density. OD is the outer diameter, ID is the inner diameter (OD minus 2× wall thickness), all in meters. Multiplying the resulting volume (m³) by the brass alloy density (kg/m³) gives weight in kilograms.

What is the density of brass used in the calculation?

Brass density varies by alloy. Common values: C26000 Cartridge Brass = 8530 kg/m³, C27000 Yellow Brass = 8470 kg/m³, C28000 Muntz Metal = 8390 kg/m³, C36000 Free Cutting Brass = 8500 kg/m³, C46400 Naval Brass = 8440 kg/m³. This calculator uses the precise density for each selected alloy.

What is the difference between outer diameter and wall thickness?

Outer diameter (OD) is the total outside dimension of the pipe. Wall thickness is how thick the pipe wall is. The inner diameter (ID) is calculated as OD minus 2× wall thickness. The calculator will warn you if the wall thickness is too large for the given OD.

Why is brass denser than aluminum or steel?

Brass is a copper-zinc alloy. Copper has a density of about 8960 kg/m³ and zinc about 7133 kg/m³, so brass alloys typically fall between 8300–8600 kg/m³ depending on the zinc content — much heavier than aluminum (2700 kg/m³) but lighter than pure copper.

Can I calculate the total weight for multiple pipes?

Yes. Enter the number of pipes in the Quantity field and the calculator shows both the per-pipe weight and the total weight for the batch.

What units are supported?

Diameter and wall thickness can be entered in mm, cm, or inches. Length can be entered in meters, mm, feet, or inches. All values are converted to meters internally before calculation.

Brass Pipe Weight Calculator

Enter outer diameter, wall thickness, and length to instantly calculate brass pipe weight in kg and lbs.

Pipe Dimensions

Outer Diameter (OD)

Wall Thickness

Length

Brass Alloy

Quantity (pipes)

Formula Reference

W = (π / 4) × (OD² − ID²) × L × ρ

Where OD = outer diameter (m), ID = inner diameter = OD − 2×t (m), t = wall thickness, L = length (m), ρ = density (kg/m³), W = weight (kg).

Enter pipe dimensions on the left and click Calculate.

Brass Alloy Densities

Alloy	Grade / Use	kg/m³	lb/in³
C22000	Commercial Bronze 90/10	8750	0.3161
C26000	Cartridge Brass 70/30	8530	0.3082
C27000	Yellow Brass 65/35	8470	0.3060
C28000	Muntz Metal 60/40	8390	0.3031
C36000	Free Cutting Brass	8500	0.3071
C46400	Naval Brass	8440	0.3049

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Summary

Enter outer diameter, wall thickness, and length to instantly calculate brass pipe weight in kg and lbs.

How it works

Enter the pipe outer diameter (OD) and select the unit (mm, cm, or in).
Enter the wall thickness and select the unit.
Enter the pipe length and select the unit (m, mm, ft, or in).
Choose the brass alloy grade from the dropdown.
Optionally enter a quantity for multiple pipes.
Click Calculate to get the weight in kg and lbs using W = (π/4) × (OD² − ID²) × L × ρ.

Use cases

Estimating brass pipe material weight for plumbing and HVAC projects.
Calculating freight and shipping weight for brass pipe orders.
Comparing alloy grades and wall thicknesses to optimize cost and weight.
Preparing bill of materials (BOM) for fabrication and manufacturing.
Verifying load and structural design for brass fittings and fixtures.
Cost estimation for brass pipe purchases by weight.
Material planning for marine, decorative, and industrial piping systems.
Quick field check of pipe weight before lifting or handling.

Frequently Asked Questions

Last updated: 2026-09-19 · Reviewed by Nham Vu