What formula is used to calculate nickel round bar weight?

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

What is the density of pure nickel?

Pure nickel (Ni 200 and Ni 201) has a density of 8908 kg/m³ (0.3218 lb/in³). Nickel alloys differ: Monel 400 is about 8800 kg/m³, Inconel 625 is 8440 kg/m³, and Hastelloy C-276 is 8890 kg/m³.

Does this calculator support both metric and 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 before the calculation runs.

Can I calculate the 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 all bars combined.

What is the difference between Inconel 600 and Inconel 625?

Inconel 600 (density 8470 kg/m³) is a nickel-chromium alloy used for high-temperature oxidation resistance. Inconel 625 (density 8440 kg/m³) adds molybdenum and niobium for superior corrosion and fatigue resistance. Both weigh very similarly per unit volume.

How does Hastelloy C-276 density compare with pure nickel?

Hastelloy C-276 (8890 kg/m³) contains significant amounts of molybdenum, chromium, and tungsten, bringing its density very close to—but slightly below—pure nickel (8908 kg/m³). The difference is negligible for most engineering estimates.

Nickel Round Bar Weight Calculator

Enter diameter, length, and nickel grade to instantly calculate round bar weight in kg and lbs.

Bar Dimensions

Diameter

Length

Nickel Grade

Quantity (bars)

Formula Reference

W = (π / 4) × D² × L × ρ

Where D = diameter (m), L = length (m), ρ = nickel grade density (kg/m³), W = weight (kg).

Enter dimensions on the left and click Calculate.

Nickel Grade Densities

Grade	Description	kg/m³	lb/in³
Ni 200 / Ni 201	Pure Nickel	8908	0.3218
Monel 400	Ni-Cu, Corrosion-Resistant	8800	0.3179
Monel K-500	Age-Hardened Ni-Cu	8440	0.3049
Inconel 600	Ni-Cr, High-Temperature	8470	0.3059
Inconel 625	Ni-Cr-Mo, Fatigue-Resistant	8440	0.3049
Inconel 718	Precipitation-Hardened	8220	0.2970
Hastelloy C-276	Ni-Mo-Cr, Acid-Resistant	8890	0.3211

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Summary

Enter diameter, length, and nickel grade to instantly calculate 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.
Select the nickel grade from the dropdown (defaults to pure nickel at 8908 kg/m³).
Optionally enter a quantity for multiple bars.
The calculator applies W = (π/4) × D² × L × ρ and displays weight in kg and lb.
Click Copy to save the result to your clipboard.

Use cases

Estimating material weight for chemical processing and oil-and-gas projects.
Calculating freight and shipping weight for nickel bar orders.
Comparing alloy weights when selecting materials for high-temperature applications.
Preparing bill of materials (BOM) for CNC machining and precision fabrication.
Verifying load limits on lifting and handling equipment for corrosion-resistant alloys.
Cost estimation for nickel alloy stock by weight.
Material planning for aerospace and marine engineering.
Quality-control cross-checks on incoming nickel bar deliveries.

Frequently Asked Questions

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