Aluminum Weight Calculator
Choose an aluminum alloy and stock shape, then enter the dimensions, length, and quantity. Calculate theoretical weight for plate, bar, or round tube when comparing quotes, planning stock, or arranging handling.
Formula
Theoretical mass = cross-sectional area × length × nominal aluminum-alloy density × quantity.
Solid plate and bar sections use their geometric area; round tube subtracts the inside circle from the outside circle.
Inside diameter = outside diameter − 2 × wall thickness for a concentric round tube.
Aluminum Association nominal densities are calculation values and should not be presented as guaranteed engineering requirements.
Common examples
Load a calculated example, then adjust its dimensions or quantity.
| Example | Inputs | Calculated answer | Load example |
|---|---|---|---|
| US machine-shop order6061 plate, 0.25 × 48 × 96 inA 6061 plate quote should use the ordered blank size, temper, saw allowance, and surface condition—not only the finished part dimensions. | Material or alloy: Aluminum 6061; Shape: Plate or sheet; Thickness: 0.25 in; Width or side: 48 in; Length: 8 ft; Quantity: 4 | Total theoretical weight203.881295 kg | |
| Long-bar stock planning6061 round bar, 2 in × 12 ftFull-length stock weight supports rack and remnant planning when the selected density matches the documented alloy and temper. | Material or alloy: Aluminum 6061; Shape: Round bar; Diameter: 2 in; Length: 12 ft; Quantity: 6 | Total theoretical weight120.095996 kg | |
| Frame fabrication6063 tube, 50 × 3 mm × 6 mRound-tube mass comes from actual outside diameter and wall thickness rather than a catalog family name alone. | Material or alloy: Aluminum 6063; Shape: Round tube; Outside diameter: 50 mm; Wall thickness: 3 mm; Length: 6 m; Quantity: 12 | Total theoretical weight86.112311 kg | |
| Enclosure material takeoff5052 sheet, 2 × 1250 × 2500 mmEnclosure takeoffs can total each full 5052 sheet while tracking protective film, nesting loss, and cutouts separately. | Material or alloy: Aluminum 5052; Shape: Plate or sheet; Thickness: 2 mm; Width or side: 1250 mm; Length: 2.5 m; Quantity: 20 | Total theoretical weight335 kg | |
| Marine fabrication quote5083 plate, 12 × 1500 × 3000 mmMarine work should retain the 5083 grade and density source with the calculation, plus any project-specific material approval. | Material or alloy: Aluminum 5083; Shape: Plate or sheet; Thickness: 12 mm; Width or side: 1500 mm; Length: 3 m; Quantity: 5 | Total theoretical weight718.2 kg | |
| High-strength tooling blank7075 plate, 1 × 24 × 48 inHigh-strength tooling blanks can be screened for handling and price without treating nominal density as a certified material property. | Material or alloy: Aluminum 7075; Shape: Plate or sheet; Thickness: 1 in; Width or side: 24 in; Length: 4 ft; Quantity: 2 | Total theoretical weight106.093785 kg | |
| Aerospace stock screening2024 round bar, 1.5 in × 6 ftAerospace purchasing still requires the applicable specification, traceability, and approved material data; use this calculation only for early planning. | Material or alloy: Aluminum 2024; Shape: Round bar; Diameter: 1.5 in; Length: 6 ft; Quantity: 8 | Total theoretical weight46.370399 kg | |
| Prototype cut list6061 square bar, 25 mm × 3 mPrototype cut lists should total the incoming bar length before subtracting saw kerf, machining removal, and reusable remnants. | Material or alloy: Aluminum 6061; Shape: Square bar; Width or side: 25 mm; Length: 3 m; Quantity: 10 | Total theoretical weight50.625 kg | |
| Fixture fabrication6061 flat bar, 2 × 0.25 in × 12 ftFixture stock weight covers the solid flat bar; holes, counterbores, and purchased overlength should be handled in the dimensions or separately. | Material or alloy: Aluminum 6061; Shape: Flat bar; Thickness: 0.25 in; Width or side: 2 in; Length: 12 ft; Quantity: 16 | Total theoretical weight50.970324 kg | |
| Architectural rail estimate6063 tube, 2 in OD × 0.125 in wallArchitectural rail estimates need the supplier's actual section dimensions, finish, and stock length rather than assumptions from this example. | Material or alloy: Aluminum 6063; Shape: Round tube; Outside diameter: 2 in; Wall thickness: 0.125 in; Length: 20 ft; Quantity: 10 | Total theoretical weight78.187498 kg |
Frequently asked questions
What density should I use for aluminum?
Use the nominal density published for the specific alloy when available. Do not assume a single value applies to every aluminum grade or product condition.
Does aluminum temper change the weight?
Temper has a much larger effect on mechanical properties than on nominal density, but the applicable supplier or industry data should still be tied to the alloy and product.
Can I calculate an extrusion from outside width and height?
Only if the cross-section is one of the supported simple shapes. Complex extrusions need a documented cross-sectional area or mass per length from the profile supplier.
Why should I keep the density source?
It lets buyers and engineers verify the alloy, units, date, and intended use of the value instead of treating a generic number as universally exact.
Sources
Circumference, Area and Volume (Opens in a new tab)
National Institute of Standards and Technology
- Supports
- Geometry or calculation formula
- Checked
NIST Guide to the SI, Appendix B.8 and footnotes (Opens in a new tab)
National Institute of Standards and Technology
- Supports
- Unit conversion
- Checked
The Aluminum Association
- Supports
- Material density
- Checked