What is the density of aluminum plate?

Pure aluminum has a density of 2700 kg/m3 (2.70 g/cm3). Structural plate alloys vary: 5083 marine plate is 2660 kg/m3, 6061 is 2700 kg/m3, and high-strength 7075 is 2810 kg/m3 due to its zinc and copper content.

How is aluminum plate weight calculated?

The formula is: Weight (kg) = Length (m) x Width (m) x Thickness (m) x Density (kg/m3). All dimensions are converted to meters first, giving a volume in m3, which is then multiplied by the alloy density.

What is the difference between aluminum plate and aluminum sheet?

In industry, "sheet" typically refers to material up to 6.35 mm (0.25 in) thick, while "plate" refers to material thicker than 6.35 mm. Plates are used for structural, tooling, and heavy fabrication applications. The weight formula is identical for both.

Which aluminum alloy is best for structural plate?

6061-T6 is the most common structural plate alloy, offering a good balance of strength, machinability, and weldability at 2700 kg/m3. 5083-H116 is preferred in marine environments. 7075-T6 is used in aerospace tooling where maximum strength is required.

Can I calculate the weight of multiple plates at once?

Yes. Set the Quantity field to the number of plates and the calculator multiplies the per-plate weight by that number, showing both the total weight and the individual plate weight.

Does this calculator support imperial (inch/foot) units?

Yes. Length and width can be entered in inches or feet, and thickness in inches. All values are converted to meters internally before the density formula is applied.

How accurate are the results?

Results are theoretical weights based on nominal dimensions and standard alloy densities per ASTM B209 and EN 485 specifications. Actual weights may vary by approximately 3-5% due to manufacturing tolerances.

Aluminum Plate Weight Calculator

Name: Aluminum Plate Weight Calculator
Availability: InStock
Author: Nham Vu

Enter the length, width, and thickness of an aluminum plate, pick your alloy, and get the exact weight in kg and lbs instantly.

Plate Dimensions

Length

Width

Thickness

Aluminum Alloy

Quantity (plates)

Formula Reference

Weight (kg) = L (m) × W (m) × T (m) × ρ (kg/m³)

L = length, W = width, T = thickness, ρ = alloy density. All dimensions are converted to meters first. Standard structural plate alloy 6061 has a density of 2700 kg/m³.

Enter plate dimensions on the left and click Calculate.

Aluminum Alloy Densities

Alloy	Typical Use	kg/m³	lb/in³
Pure Al	Reference	2700	0.0975
1100	Chemical / food industry	2710	0.0979
2024	Aerospace structural	2780	0.1005
3003	General fabrication	2730	0.0986
5052	Marine / pressure vessels	2680	0.0968
5083	Marine structural plate	2660	0.0961
6061	Structural / tooling	2700	0.0975
6082	Structural (EU)	2700	0.0975
7075	Aerospace tooling plate	2810	0.1015

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Summary

Enter the length, width, and thickness of an aluminum plate, pick your alloy, and get the exact weight in kg and lbs instantly.

How it works

Enter the plate length in your preferred unit (mm, cm, m, in, or ft).
Enter the plate width in the same or a different unit.
Enter the plate thickness — typically in mm or inches for structural plate.
Select the aluminum alloy; the certified density is applied automatically.
Optionally enter a quantity to calculate the total weight for multiple plates.
Click Calculate Weight to see results in kg and lbs with a full dimensional breakdown.

Use cases

Estimating aluminum plate weight for fabrication quotes and procurement.
Calculating freight and shipping costs for heavy plate stock orders.
Comparing alloy choices (e.g., 6061 vs 7075) by weight for aerospace tooling.
Preparing bills of materials (BOM) for marine, structural, and defence applications.
Checking structural dead load from aluminum plate floor panels or grating.
Verifying plate weight against supplier mill certificates for quality assurance.
Batch weight calculations for cut-to-size aluminum plate orders.
Estimating raw material cost by combining plate weight with price per kg.

Frequently Asked Questions

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