What formula is used?

Weight = (π ÷ 4) × (OD² − ID²) × Length × Density, where all dimensions are converted to meters and density is 8730 kg/m³. The result in m³ multiplied by density gives kilograms.

What bronze density does this calculator use?

A density of 8730 kg/m³ is used, which is the standard value for common bronze alloys such as C220 (Commercial Bronze), C260 (Cartridge Brass), and C510 (Phosphor Bronze). Specialty alloys like aluminum bronze (C954, ~7640 kg/m³) will differ.

Why does this tool use inner diameter instead of wall thickness?

Many bronze tube datasheets specify both OD and ID directly. Using ID as the input avoids a subtraction step and reduces input errors when both values are already known. Wall thickness is still shown in the results for reference.

What units are supported?

Outer and inner diameter accept mm, cm, or inches. Length accepts mm, cm, m, inches, or feet. All values are converted to meters before the calculation runs.

Why must the outer diameter be greater than the inner diameter?

If the inner diameter is equal to or greater than the outer diameter, the wall thickness would be zero or negative, which is physically impossible for a tube. The calculator validates this and shows an error message.

How accurate is this calculator?

The calculation is accurate for standard bronze alloys at room temperature. For precision engineering, verify the exact density of the specific alloy grade with the material certificate, as density can vary by ±1–2% between alloy grades.

Bronze Round Tube Weight Calculator

Name: Bronze Round Tube Weight Calculator
Availability: InStock
Author: Nham Vu

Enter outer diameter, inner diameter, and length to get the weight of a bronze round tube in kg and lb instantly.

Tube Dimensions

Outer Diameter (OD)

Inner Diameter (ID)

Length

Formula Reference

W = (π / 4) × (OD² − ID²) × L × ρ

Where OD = outer diameter (m), ID = inner diameter (m), L = length (m), ρ = 8730 kg/m³ (bronze density), W = weight (kg).

Enter tube dimensions on the left and click Calculate.

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Summary

Enter outer diameter, inner diameter, and length to get the weight of a bronze round tube in kg and lb instantly.

How it works

Enter the outer diameter (OD) of the bronze tube and choose a unit (mm, cm, in).
Enter the inner diameter (ID) of the bronze tube and choose a unit (mm, cm, in).
Enter the tube length and choose a unit (mm, cm, m, in, ft).
Click Calculate — wall thickness and cross-sectional area are derived automatically.
Weight is displayed in kilograms and pounds using the standard bronze density of 8730 kg/m³.

Use cases

Estimating material weight for bronze tube bushings and structural assemblies.
Calculating shipping and freight weight for bronze tube orders.
Preparing a bill of materials for machining or purchasing departments.
Comparing tube sizes to balance strength and weight in bearing applications.
Verifying load and handling requirements before installation.
Quick estimation of bronze sleeve or liner weight in manufacturing.
Checking raw material cost based on weight for bronze tube procurement.
Field weight checks without manual calculations on-site.

Frequently Asked Questions

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Last updated: 2026-05-23 · Reviewed by Nham Vu