🛡️ Aluminum Weight Calculator: Sheet, Bar, Tube, Plate, and More

This aluminum weight calculator covers every common product form: sheet, plate, round bar, flat bar, hex bar, round tube, square tube, rectangular tube, and extruded profiles. Enter your dimensions, pick an alloy, and get the result in kilograms and pounds at the same time.

The tool handles 15 alloys with accurate density values, supports five input units (mm, cm, in, ft, m), and includes a multi-piece list for batch calculations. A cost estimate field is also available if you enter a price per kg or per lb.

Below the tool, you will find the weight formula for each shape, a worked example for every product form, an alloy density table, a guide on common calculation mistakes, and answers to the questions most aluminium weight pages skip entirely.

How to Calculate Aluminium Weight

Every aluminium weight calculation follows one rule: weight equals volume multiplied by density. Get the volume right for the shape, use the correct density for the alloy, and the result follows directly.

The standard density for general aluminium is 2.70 g/cm³, which equals 0.0975 lb/in³. Alloy choice shifts that number, so using a generic value for a high-density grade like 7075 will produce an understated result.

The Aluminium Weight Calculation Formula

For flat products, the formula is straightforward:

Weight = Length × Width × Thickness × Density

This applies directly to sheet, plate, flat bar, and rectangular bar. For round bar, tube, hex bar, and profiles, the volume formula changes, but density stays the same. The sections below cover each shape individually.

• Results from this formula are theoretical weight based on nominal dimensions.
• Actual weight may vary due to mill tolerances and alloy batch variation.
• Use theoretical weight for ordering and planning. Use a certified scale for freight paperwork.

The aluminium weight calculation formula can be expressed in metric or imperial. Both give the same result when units are consistent throughout.

Unit Consistency Before You Calculate

The most common mistake in manual calculations is mixing units within the same formula. Centimeters and millimeters in the same equation produce a result that is off by a factor of 10.

Convert everything to one unit first, then multiply.

• For metric results: volume in cm³ × density in g/cm³ = weight in grams. Divide by 1000 for kg.
• For imperial results: volume in in³ × 0.0975 = weight in lbs (for general 6061-grade aluminium).
• mm to cm: divide by 10. cm to m: divide by 100. Inches to feet: divide by 12.

The calculator on this page handles unit conversion automatically. Select your preferred unit from the dropdown and enter dimensions as they appear on your drawing or spec sheet.

Aluminium Density by Alloy and Why It Matters

The average density of 2.70 g/cm³ works well for rough estimates. For accurate results on a specific grade, you need the density of that alloy, not the average.

The difference between the lightest and heaviest common alloys is about 6 percent. On a single small part, that gap is negligible. On a full pallet of bars or a stack of cut plates, it becomes a real number that affects material cost, shipping weight, and structural load calculations.

Aluminium Alloy Density Reference Table

The table below lists the density for each alloy in the calculator. The “common use” column shows where each grade appears most often in practice.

Alloy	Series	Density (g/cm³)	Density (lb/in³)	Common Use
General Average	All	2.700	0.0975	General estimation
1100	1xxx	2.705	0.0977	Chemical equipment, foil, heat exchangers
2011	2xxx	2.730	0.0986	Screw machine parts, fittings
2024	2xxx	2.780	0.1004	Aircraft structures, high-strength parts
3003	3xxx	2.690	0.0972	Roofing, siding, cooking utensils
5005	5xxx	2.680	0.0968	Architectural panels, anodized trim
5052	5xxx	2.660	0.0961	Marine, pressure vessels, fuel tanks
5083	5xxx	2.650	0.0957	Shipbuilding, cryogenic applications
5754	5xxx	2.660	0.0961	Automotive, welded structures
6005	6xxx	2.700	0.0975	Structural extrusions, ladders
6061	6xxx	2.690	0.0972	Structural, marine, aerospace (most common)
6063	6xxx	2.700	0.0975	Architectural extrusions, window frames
6082	6xxx	2.710	0.0979	Bridges, cranes, trusses
7075	7xxx	2.810	0.1015	Aircraft, defense, high-stress parts
7068	7xxx	2.820	0.1019	Aerospace, ultra-high strength applications

The aluminium 6061 weight calculator and aluminium 6063 weight calculator on this page load these values automatically when you select the alloy from the dropdown.

Does Temper Change Aluminium Weight?

No. Temper has no effect on density or weight.

Temper designations like T6, T651, H32, H34, and O describe the mechanical or thermal treatment applied to the alloy after forming. They affect yield strength, hardness, and ductility. They do not change the chemical composition of the alloy, and they do not change its density.

A 6061-T6 bar and a 6061-O bar of identical dimensions weigh exactly the same. When using a weight calculator, select the alloy grade. Ignore the temper suffix entirely.

• Alloy grade determines density and weight.
• Temper suffix (T6, H32, O) determines mechanical properties only.
• Substituting 7075 for 6061 in a design adds weight. Changing T6 to T651 does not.

This is one of the most common misconceptions in workshop and fabrication settings, and it is skipped on nearly every competing aluminium weight page.

Which Alloy Weighs the Most and Which Weighs the Least?

Among the grades covered here, 7068 is the densest at 2.820 g/cm³. The 5083 marine alloy is the lightest at 2.650 g/cm³. That is a difference of 0.170 g/cm³, or about 6.4 percent.

In practical terms: a same-size piece of 7075 weighs roughly 6 percent more than a 5083 piece. For aerospace nesting, bundle freight, or fixture design, that gap matters and is worth selecting the correct alloy in the calculator rather than leaving it at the average.

Aluminium Sheet and Plate Weight Calculator

Sheet and plate are the most common product forms for aluminium weight calculations. The formula is the same for both: length multiplied by width multiplied by thickness multiplied by density.

The practical difference between sheet and plate is thickness. Sheet is typically under 6mm. Plate starts at 6mm and above, though some suppliers set that boundary at 6.35mm (1/4 inch). For weight calculation purposes, the distinction does not matter. The same formula applies to both.

Aluminium Sheet Weight per Square Meter

If you know the area of the sheet but not the total dimensions, use the weight-per-square-meter value for your thickness and multiply by the total area.

The table below uses a density of 2.70 g/cm³ and applies to flat sheet with a smooth surface.

Thickness	kg/m²	lb/ft²
0.5 mm	1.35	0.28
1.0 mm	2.70	0.55
1.5 mm	4.05	0.83
2.0 mm	5.40	1.11
2.5 mm	6.75	1.38
3.0 mm	8.10	1.66
4.0 mm	10.80	2.21
5.0 mm	13.50	2.77
6.0 mm	16.20	3.32
10.0 mm	27.00	5.53

Example: a 2m × 1m sheet at 3mm thickness. Weight = 2 × 1 × 8.10 = 16.20 kg. Or enter the dimensions directly into the aluminium sheet weight calculator above for the same result in both kg and lbs.

How to Calculate Aluminium Chequered Plate Weight

Chequered plate, also called checker plate or tread plate, has raised diamond or bar patterns pressed onto one face. That pattern adds material above the nominal base thickness.

Standard practice is to calculate the base weight from the nominal thickness, then add 5 percent for the pattern:

• Calculate base weight: length × width × nominal thickness × 2.70 g/cm³.
• Multiply by 1.05 to account for the raised pattern.
• For heavy tread patterns (industrial flooring grade), use 1.08 instead.

Example: a 1m × 1m sheet of 3mm aluminium chequered plate. Base weight = 8.10 kg. With 5 percent pattern allowance: 8.10 × 1.05 = 8.51 kg.

The aluminium checker plate weight calculator on this page calculates the base weight. Add the pattern percentage manually after, or use the quantity field to apply a small adjustment across multiple pieces.

Nominal Thickness vs. Actual Thickness

Mills supply sheet and plate to dimensional tolerances defined in ASTM B209. A sheet specified at 3mm nominal may be anywhere from 2.90mm to 3.10mm in actual thickness, depending on the tolerance class.

That is a range of plus or minus 3.3 percent on a single dimension alone. On a full pallet of material, the actual total weight can differ from the calculated theoretical weight by 3 to 5 percent.

• Use theoretical weight for procurement planning, cost estimation, and material ordering.
• Use a certified scale for freight documents, compliance paperwork, and shipping declarations.
• For structural applications, apply a tolerance allowance to the theoretical weight before using it in load calculations.

The same principle applies to bar and tube. Nominal dimensions from a spec sheet are the starting point, not the guaranteed delivered size.

Aluminium Bar Weight Calculator

Solid bar products share the same core rule: volume multiplied by density. The volume formula changes by shape, but the density stays constant for the selected alloy. Choose the correct shape in the calculator before entering dimensions.

Round Bar Weight Calculation Formula

Volume = pi × (diameter / 2)² × length.

For 6061 aluminium in imperial units, a simplified shortcut applies:

Weight (lbs) = 0.0306 × d² × L, where d is diameter in inches and L is length in inches.

Worked example: a 2-inch diameter 6061 round bar, 36 inches long.

• Volume = 3.14159 × 1² × 36 = 113.1 in³
• Weight = 113.1 × 0.0972 = 11.0 lbs (5.0 kg)

The aluminium round bar weight calculator above handles this automatically for any alloy and any unit. Enter diameter and length, select the alloy, and read the result.

Flat Bar and Rectangular Bar Weight

Volume = width × height × length. Width is the wide face. Height is the thin face (also called thickness on some spec sheets).

Worked example: a 50mm × 10mm flat bar, 1000mm long, in 6061 alloy.

• Volume = 50 × 10 × 1000 = 500,000 mm³ = 500 cm³
• Weight = 500 × 2.690 = 1345 g = 1.35 kg (2.97 lbs)

The same formula covers square bar. A 30mm square bar is simply 30 × 30 × length.

Hex Bar Weight Calculation

Hex bar is sized by its across-flats dimension, abbreviated A/F on supplier spec sheets. That is the distance between two parallel flat faces, not corner to corner.

Volume = (3√3 / 2) × A/F² × length = 2.598 × A/F² × length.

Worked example: a 30mm A/F hex bar, 500mm long, in 6063 alloy.

• Volume = 2.598 × 900 × 500 = 1,169,100 mm³ = 1169.1 cm³
• Weight = 1169.1 × 2.700 = 3156.6 g = 3.16 kg (6.96 lbs)

Angle Bar Weight Calculation

Angle bar has two legs joined at 90 degrees. The cross-section area is calculated by treating the two legs as rectangles, then subtracting the overlapping corner.

Cross-section area = (Leg A + Leg B − Thickness) × Thickness.

Worked example: a 50 × 50 × 5mm equal angle, 1000mm long, in 6061 alloy.

• Cross-section = (50 + 50 − 5) × 5 = 475 mm²
• Volume = 475 × 1000 = 475,000 mm³ = 475 cm³
• Weight = 475 × 2.690 = 1277.75 g = 1.28 kg (2.82 lbs)

For unequal angle, the same formula applies with different values for Leg A and Leg B. The aluminium angle weight calculator on this page uses the flat bar shape for equal legs and the rectangular bar shape for unequal legs. Enter each leg as width and height, then enter length.

Aluminium Tube and Pipe Weight Calculator

Hollow sections require a two-step volume calculation: calculate the outer cylinder, then subtract the inner void. The result is the volume of the aluminium wall itself, which is what gets multiplied by density.

The standard input for tube and pipe is outer diameter (OD) and wall thickness, not inner diameter. Supplier spec sheets always list OD and wall thickness. Inner diameter = OD minus (2 × wall thickness).

Round Tube Weight Calculation Formula

Volume = π × [(OD/2)² − (ID/2)²] × Length, where ID = OD − (2 × wall thickness).

For quick estimates in imperial units, fabricators use this industry shortcut:

Weight per foot (lbs) = 10.68 × (OD − t) × t × 0.0975, where OD and t (wall thickness) are in inches.

Worked example: a 2-inch OD, 0.125-inch wall, 48-inch long 6061 round tube.

• ID = 2 − (2 × 0.125) = 1.75 inches
• Volume = π × (1² − 0.875²) × 48 = 3.14159 × (1 − 0.765625) × 48 = 35.34 in³
• Weight = 35.34 × 0.0972 = 3.44 lbs (1.56 kg)

The aluminium pipe weight calculator above handles this directly. Enter OD, wall thickness, and length. The inner diameter is calculated automatically.

Square and Rectangular Tube Weight

Volume = (Outer Width × Outer Height − Inner Width × Inner Height) × Length.

Inner dimensions = outer dimensions minus (2 × wall thickness) on each side.

Worked example: a 50 × 50 × 3mm square tube, 1000mm long, in 6061 alloy.

• Outer area = 50 × 50 = 2500 mm²
• Inner dimensions = 50 − (2 × 3) = 44mm on each side
• Inner area = 44 × 44 = 1936 mm²
• Section area = 2500 − 1936 = 564 mm²
• Volume = 564 × 1000 = 564,000 mm³ = 564 cm³
• Weight = 564 × 2.690 = 1517.16 g = 1.52 kg (3.35 lbs)

For rectangular tube, the same formula applies using two different outer dimensions. The aluminium rectangular tube weight calculator and aluminium square tube weight calculator both use this approach.

Round Bar vs. Round Tube: Why the Formula Differs

A round bar uses the full circular cross-section: π × r² × length.

A round tube subtracts the hollow inner circle from the outer circle. Using bar math for a tube overstates the weight, sometimes by 50 percent or more depending on how thin the wall is.

• Always confirm whether the product is solid or hollow before selecting a shape.
• A 2-inch solid bar is not the same as a 2-inch OD tube, even at the same length.
• Supplier spec sheets label hollow products as “tube” or “pipe” and list wall thickness separately.

Aluminium Extrusion and Profile Weight Calculator

Extruded aluminium profiles include channels, T-sections, Z-sections, H-sections, angles, and T-slot frames. Standard profiles from suppliers come with a published weight-per-meter value on the data sheet. Use that figure directly when it is available.

For custom or non-standard profiles, calculate the cross-section area from the drawing, then apply the formula:

Weight = Cross-section Area (cm²) × Length (cm) × Density (g/cm³)

The result is in grams. Divide by 1000 for kg.

How to Calculate Aluminium Channel Weight

A channel profile (U-channel or C-channel) has two flanges and one web. Break the cross-section into rectangles, calculate the area of each rectangle, then add them together.

Worked example: a 60 × 40 × 4mm aluminium U-channel, 2000mm long, in 6063 alloy.

• Web area = 60 × 4 = 240 mm²
• Two flanges = 2 × (40 − 4) × 4 = 2 × 144 = 288 mm²
• Total cross-section = 240 + 288 = 528 mm²
• Volume = 528 × 2000 = 1,056,000 mm³ = 1056 cm³
• Weight = 1056 × 2.700 = 2851.2 g = 2.85 kg (6.29 lbs)

The aluminium c channel weight calculator and aluminium channel weight calculator on this page use the rectangular bar shape as the closest match. Enter the web and flange dimensions as separate pieces and add them using the multi-piece list on Tab 2.

Weight Per Meter for Common Extrusion Profiles

Weight per meter (kg/m) = Cross-section area (cm²) × 0.270 for general 6063 aluminium.

The table below gives reference values for commonly ordered profiles. Density used is 2.700 g/cm³.

Profile	Size	kg/m	lbs/ft
Equal Angle	25 × 25 × 3mm	0.38	0.26
Equal Angle	50 × 50 × 5mm	1.28	0.86
Flat Bar	50 × 6mm	0.81	0.54
Square Bar	25 × 25mm	1.69	1.14
Round Bar	25mm dia.	1.33	0.89
Round Bar	50mm dia.	5.30	3.56
Square Tube	25 × 25 × 2mm	0.50	0.34
Square Tube	50 × 50 × 3mm	1.52	1.02
Rect Tube	50 × 25 × 2mm	0.62	0.42
U Channel	60 × 40 × 4mm	1.43	0.96

These values are theoretical and based on nominal dimensions. Actual supplier profiles may vary slightly depending on manufacturer tolerances and die specifications.

Aluminium Coil, Foil, and Busbar Weight

These three product forms do not fit a standard shape selector but appear in enough fabrication and procurement scenarios that the formulas are worth knowing.

Aluminium Coil Weight Calculation

A coil is a hollow cylinder. If you know the outer diameter, inner (core) diameter, and coil width, use the annulus formula:

Weight = π × (OD² − ID²) / 4 × Width × Density

All dimensions must be in the same unit. For metric: dimensions in cm, density in g/cm³, result in grams. Divide by 1000 for kg.

If you know the strip length instead of the coil OD:

Weight = Length × Width × Thickness × Density

This is the flat sheet formula applied to the uncoiled strip length. Most coil stock is ordered by weight in kg or lbs, so the coil formula is typically used in reverse: given the target order weight, solve for the strip length available on the coil.

Aluminium Foil Weight Calculation

Foil uses the flat sheet formula. The only adjustment is unit conversion, since foil thickness is typically stated in microns.

Convert microns to mm by dividing by 1000. Convert mm to cm by dividing by 10.

Worked example: a 100m × 30cm roll of 15-micron aluminium foil.

• Thickness = 15 microns = 0.015mm = 0.0015 cm
• Volume = 10,000 cm × 30 cm × 0.0015 cm = 450 cm³
• Weight = 450 × 2.700 = 1215 g = 1.22 kg (2.68 lbs)

Aluminium Busbar Weight Calculation

Busbars are flat rectangular conductors used in electrical distribution panels, switchgear, and transformer connections. The weight formula is identical to flat bar:

Weight = Width × Thickness × Length × Density

Busbar alloys are typically from the 1xxx series (1100 or 1350) chosen for electrical conductivity rather than structural strength. Use the actual alloy density rather than the 6061 default.

• 1100 alloy density: 2.705 g/cm³
• 1350 alloy density: 2.700 g/cm³

Worked example: a 100mm × 10mm × 2000mm aluminium busbar in 1100 alloy.

• Volume = 10 × 1 × 200 = 2000 cm³
• Weight = 2000 × 2.705 = 5410 g = 5.41 kg (11.93 lbs)

The aluminium busbar weight calculator on this page uses the flat bar shape. Enter width, thickness, and length in your preferred unit and select 1100 from the alloy dropdown for accurate results.

Weight Per Foot and Weight Per Meter for Aluminium Stock

Most US metal suppliers list bar and tube stock by lbs/ft. Most international and metric suppliers list it as kg/m. Both are the same concept: the weight of one linear unit of a given profile at a given size.

Knowing the weight per linear unit makes it easy to price a cut-to-length order, estimate a bundle weight, or check a supplier’s quoted weight against your own calculation.

How to Convert Total Weight to Weight Per Foot or Per Meter

Once the total weight is calculated, divide by the length in the target unit.

• lbs per foot = total weight (lbs) / length (ft)
• kg per meter = total weight (kg) / length (m)

Worked example: a 6061 round bar calculated at 11.0 lbs for 36 inches (3 ft).

• lbs/ft = 11.0 / 3 = 3.67 lbs/ft
• kg/m = 4.99 / 0.9144 = 5.46 kg/m

Alternatively, use the cross-section area shortcut directly:

kg per meter = Cross-section area (cm²) × 0.270

This works for any profile shape. Calculate the cross-section area in cm², multiply by 0.270 (which is the density of 6061 in g/cm³ divided by 10 to account for length in meters), and the result is kg/m.

Quick Weight Per Meter Reference for Common Stock Sizes

The table below covers commonly ordered aluminium stock sizes. Density used is 2.70 g/cm³, suitable for 6061, 6063, and general alloy estimation.

Profile	Size	kg/m	lbs/ft
Round Bar	10mm dia.	0.21	0.14
Round Bar	20mm dia.	0.85	0.57
Round Bar	25mm dia.	1.33	0.89
Round Bar	50mm dia.	5.30	3.56
Flat Bar	50 × 6mm	0.81	0.54
Flat Bar	100 × 10mm	2.70	1.81
Square Tube	25 × 25 × 2mm	0.50	0.34
Square Tube	50 × 50 × 3mm	1.52	1.02
Round Tube	25mm OD × 2mm wall	0.41	0.28
Round Tube	50mm OD × 3mm wall	1.20	0.81
Equal Angle	30 × 30 × 3mm	0.47	0.32
Equal Angle	50 × 50 × 5mm	1.28	0.86

For sizes not listed here, calculate the cross-section area and apply the kg/m formula above, or use the calculator and divide the result by the length.

Theoretical Weight vs. Actual Weight

Three versions of weight exist in procurement and fabrication. Using the wrong one for the wrong purpose creates problems.

• Theoretical weight: calculated from nominal dimensions and standard alloy density. This is what the calculator produces.
• Scale weight: the measured weight of the actual piece on a certified scale. This is the real number.
• Billable weight: what the supplier invoices. Some suppliers bill on theoretical weight, others on scale weight, others on gross bundle weight. Confirm which method applies before placing a large order.

How Much Can Actual Weight Differ from Theoretical?

ASTM B209 governs dimensional tolerances for aluminium sheet and plate. ASTM B221 covers extruded shapes. Both standards allow measurable variation from the nominal dimension.

A 5mm nominal plate may be 4.80mm to 5.20mm in actual thickness depending on the tolerance class. That is a range of plus or minus 4 percent on thickness alone. On a full order of multiple pieces, the cumulative difference between theoretical and actual weight can reach 3 to 5 percent.

• For cost estimation and procurement: theoretical weight is accurate enough.
• For freight declarations and transport: weigh the actual load on a certified scale.
• For structural design: apply a tolerance allowance on top of the theoretical weight.
• For compliance paperwork: use scale weight or a certified mill test report value.

The practical takeaway is that the aluminium weight calculator gives you a reliable planning number. It is not a substitute for a certified scale when the number needs to be legally defensible.

Planning, Shipping, and Material Cost with Aluminium Weight

Weight drives three downstream decisions on every aluminium order: material cost, freight class, and structural load. Each has a different tolerance for error and a different approach to using the calculated number.

Estimating Material Cost from Weight

Aluminium is priced by the kilogram or pound at most suppliers. Multiply the calculated total weight by the current price per kg to get the raw material cost estimate.

• Add 5 to 10 percent for offcuts and waste on cut-to-size orders.
• For sheet orders, a full sheet purchase with offcuts left over still costs the full sheet weight.
• The cost field in the calculator handles the multiplication automatically when you enter a price per kg or per lb.

Current aluminium pricing varies by alloy, form, and market. 6061 plate and 6063 extrusion are typically priced differently even at the same weight. Check your supplier’s current rate sheet rather than using a fixed benchmark.

Shipping Weight and Freight Planning

Total order weight determines the carrier type and freight class. Using an understated weight on a freight declaration creates compliance issues and can result in additional charges at delivery.

• Under 68 kg per parcel: standard ground carriers (UPS, FedEx) can typically handle it.
• 68 to 150 kg: LTL (less-than-truckload) freight is usually needed.
• 150 to 500 kg: LTL pallet freight is standard.
• Over 500 kg: flatbed or full-pallet freight. Confirm with the carrier before booking.

Provide the freight carrier with the calculated theoretical weight plus a 5 percent tolerance allowance. The multi-piece list on Tab 2 of the calculator shows the total weight across all items in the order, which is the number to pass to the carrier.

Structural Load Considerations

In structural design, aluminium weight contributes to dead load. Dead load is the permanent weight of the structure’s own materials, as opposed to live load from occupants or equipment.

Use theoretical weight as the planning figure. For structural calculations submitted to a licensed engineer or building authority, apply the standard tolerance factor and confirm that the alloy density matches the specified material.

A licensed structural engineer should verify all load calculations before construction. The calculator provides a planning estimate, not a certified structural value.

Common Mistakes When Calculating Aluminium Weight

These errors appear consistently in workshop, fabrication, and procurement settings. Each one is straightforward to avoid once you know what to watch for.

• Using bar math for a hollow tube. A round tube subtracts the inner void. Using the solid round bar formula for a tube overstates weight by 30 to 60 percent depending on wall thickness. Always confirm whether the product is solid or hollow before selecting a shape.
• Mixing units within the same formula. Millimeters and centimeters in the same equation produce a result that is off by a factor of 10. Convert all dimensions to one unit before multiplying.
• Using the average density for a high-alloy grade. Leaving the calculator at 2.70 g/cm³ when working with 7075 (2.810 g/cm³) understates the weight by about 4 percent. On large orders that gap is meaningful. Select the actual alloy.
• Assuming temper changes weight. T6, H32, and O are mechanical designations, not compositional ones. A 6061-T6 and a 6061-O piece of the same dimensions weigh the same. Select the alloy number, not the temper, for density purposes.
• Using nominal thickness for freight declarations. ASTM B209 tolerances mean the actual piece may be heavier or lighter than the nominal calculation. Weigh the actual material before completing a shipping document.
• Calculating weight per piece but forgetting to multiply by quantity. Enter the quantity in the calculator, or use the multi-piece list on Tab 2 to accumulate totals across different product forms in the same order.
• Applying flat bar math to complex extrusion profiles. A T-slot frame or H-section has voids and flanges that a simple rectangle formula does not capture. Use the published cross-section area from the supplier data sheet and apply the density manually.

How to Use the Aluminum Weight Calculator

The calculator has three tabs. Tab 1 handles single-shape calculations. Tab 2 accumulates multiple pieces into a total order weight. Tab 3 is a density and formula reference.

To calculate the weight of a single piece:

1. Select the shape from the six options: Sheet/Plate, Round Bar, Flat/Rect Bar, Round Tube, Square/Rect Tube, or Hex Bar.
2. Select the alloy from the dropdown to load the correct density automatically.
3. Choose your preferred dimension unit: mm, cm, in, ft, or m.
4. Enter the required dimensions for the selected shape.
5. Enter a quantity if calculating for more than one identical piece.
6. Optionally enter a price per kg or per lb for a cost estimate.
7. Click Calculate Weight.

Results appear in kg, lbs, grams, ounces, and metric tons. The breakdown panel shows volume per piece, weight per piece, total volume, and total weight.

To build a multi-piece order total, click “Add to Multi-Piece List” after each calculation. Tab 2 tracks the running total in kg and lbs, flags whether the total exceeds standard parcel or LTL weight limits, and shows an estimated freight class.

Frequently Asked Questions

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Conclusion

Aluminium weight depends on three things: the shape, the dimensions, and the alloy. Get all three right and the result is reliable enough for ordering, shipping, and cost estimation. Use the aluminum weight calculator at the top of this page for any product form, select the specific alloy for accuracy, and use the multi-piece list when building a full order. For freight and compliance, always verify with a certified scale.