What formula is used to calculate bronze round bar weight?

The formula is: Weight = (π ÷ 4) × Diameter² × Length × Density. Diameter and length are converted to meters, multiplied to get volume (m³), then multiplied by bronze density (8,800 kg/m³) to get weight in kilograms.

What is the density of bronze?

Commercial bronze alloys typically have a density of approximately 8,800 kg/m³ (0.318 lb/in³). This value covers common grades such as C93200 bearing bronze and C90300 tin bronze used in most industrial applications.

Does this tool support imperial units?

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

Can I calculate total weight for multiple bars?

Yes. Enter the number of bars in the Quantity field and the calculator will show both the per-bar weight and the total weight for the entire batch.

How does bronze weight compare to copper and brass?

Bronze (8,800 kg/m³) is slightly less dense than pure copper (8,960 kg/m³) and slightly denser than most brass alloys (8,400–8,700 kg/m³). For high-accuracy results always use the density of your specific alloy grade.

Is this calculator suitable for all bronze alloys?

This tool uses a representative bronze density of 8,800 kg/m³, which is accurate for most common commercial grades. Tin bronzes and phosphor bronzes typically vary within ±2%; aluminum bronzes (e.g. C95400) are significantly lighter at about 7,450–7,640 kg/m³ and require their own density value. Consult your alloy datasheet for the exact density if tight tolerances are required.

Bronze Round Bar Weight Calculator

Enter diameter and length to instantly calculate bronze round bar weight in kg and lbs.

Bar Dimensions

Diameter

Length

Quantity (bars)

Formula Reference

W = (π / 4) × D² × L × 8800

Where D = diameter (m), L = length (m), 8800 = bronze density (kg/m³), W = weight (kg).

Enter dimensions on the left and click Calculate.

Bronze vs. Common Metals

Material	kg/m³	lb/in³	Common Use
Bronze (C93200)	8800	0.3179	Bearings, bushings
Copper (C11000)	8960	0.3237	Electrical, plumbing
Brass (C26000)	8530	0.3081	Fittings, valves
Steel (A36)	7850	0.2836	Structural
Aluminum (6061)	2700	0.0975	Lightweight structures

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Summary

Enter diameter and length to instantly calculate bronze round bar weight in kg and lbs.

How it works

Enter the bar diameter in millimeters, inches, or centimeters.
Enter the bar length in meters, millimeters, feet, or inches.
Optionally enter a quantity to calculate weight for multiple bars.
The calculator applies W = (π/4) × D² × L × 8800 to get weight in kilograms.
The result is also converted to pounds (1 kg = 2.20462 lb).
Click Copy to save the result to your clipboard.

Use cases

Estimating bronze material weight for bearing and bushing fabrication.
Calculating freight and shipping weight for bronze bar stock orders.
Preparing bill of materials (BOM) for CNC machining and foundry work.
Verifying load limits on lifting and handling equipment.
Cost estimation for bronze stock purchases by weight.
Comparing bronze weight against aluminum or steel alternatives.
Material planning for marine hardware and propeller shaft components.
Checking raw material requirements for pump impellers and valve bodies.

Frequently Asked Questions

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