What formula is used?

Cross-sectional area = Side² − (Side − 2 × Wall)². Weight = Area × Length × Density, where all dimensions are in meters and density is 7133 kg/m³ (zinc). The inner side equals the outer side minus twice the wall thickness.

What zinc density does this calculator use?

A density of 7133 kg/m³ is used, which is the standard value for commercially pure zinc (Zn). Zinc alloys such as Zamak or zinc-aluminum may have slightly different densities, but 7133 kg/m³ is correct for most pure zinc tube stock.

What is the difference between outer side size and wall thickness?

The outer side size is the full external dimension of one face of the square tube. Wall thickness is how thick the tube wall is. The inner side = Outer side − 2 × wall thickness. The calculator shows an error if the wall is too thick for the given side size.

Which units are supported?

Outer side size and wall thickness 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 side be greater than 2 × wall thickness?

If the wall thickness equals or exceeds half the outer side size, the inner dimension would be zero or negative, which is physically impossible for a hollow tube. The calculator validates this and shows a descriptive error.

How does zinc compare to aluminum in weight?

Zinc is significantly denser than aluminum. At 7133 kg/m³, zinc is roughly 2.64 times heavier than aluminum (2700 kg/m³) for the same tube geometry. This matters when comparing corrosion-resistant material choices.

Zinc Square Tube Weight Calculator

Name: Zinc Square Tube Weight Calculator
Availability: InStock
Author: Nham Vu

Enter outer side size, wall thickness, and length to get the weight of a zinc square tube in kg and lb instantly.

Tube Dimensions

Outer Side Size

Wall Thickness

Length

Formula Reference

W = (S² − (S − 2t)²) × L × ρ

Where S = outer side size (m), t = wall thickness (m), L = length (m), ρ = 7133 kg/m³ (zinc density), W = weight (kg).

Enter tube dimensions on the left and click Calculate.

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Summary

Enter outer side size, wall thickness, and length to get the weight of a zinc square tube in kg and lb instantly.

How it works

Enter the outer side size of the square tube and choose a unit (mm, cm, or in).
Enter the wall thickness and choose a unit (mm, cm, or in).
Enter the tube length and choose a unit (mm, cm, m, in, or ft).
Click Calculate — the inner side is derived automatically as Inner = Side − 2 × Wall.
Weight is displayed in kilograms and pounds using the standard zinc density of 7133 kg/m³.

Use cases

Estimating material weight for zinc square tube structural or architectural projects.
Calculating shipping and freight weight for zinc square tubing orders.
Preparing a bill of materials for zinc tube fabrication or purchasing.
Comparing different wall thicknesses to balance strength and overall weight.
Verifying load and handling requirements before installation or transport.
Quick field estimation of zinc tube weight without manual calculation.
Engineering checks for zinc tube sections used in corrosion-resistant assemblies.

Frequently Asked Questions

Last updated: 2026-06-09 · Reviewed by Nham Vu