How to use Aluminum Weight Calculator
- Choose the material grade, or enter a custom density.
- Pick the shape and enter dimensions. Pipe can use size and schedule, sheet can use gauges, rebar uses bar sizes and beams can come from the standard section library.
- Enter length and quantity, optionally a unit price; results update as you type. Add several items to the list to total an order.
Aluminum alloy density and weight chart
Common alloys such as 6061 and 6063 are about 2.70 g/cm³, roughly one third of carbon steel; 7075 and 2024 are heavier because of zinc and copper. Bar weights below use 6061.
| Alloy | g/cm³ | 3 mm plate kg/m² | 10 mm plate kg/m² | Ø25 bar kg/m | Relative to steel |
|---|---|---|---|---|---|
| Aluminum 1100 / 1060 | 2.71 | 8.13 | 27.1 | 1.33 | 34.5% |
| Aluminum 2024 | 2.78 | 8.34 | 27.8 | 1.365 | 35.4% |
| Aluminum 3003 | 2.73 | 8.19 | 27.3 | 1.34 | 34.8% |
| Aluminum 5052 | 2.68 | 8.04 | 26.8 | 1.316 | 34.1% |
| Aluminum 5083 | 2.66 | 7.98 | 26.6 | 1.306 | 33.9% |
| Aluminum 6061 | 2.7 | 8.1 | 27 | 1.325 | 34.4% |
| Aluminum 6063 | 2.69 | 8.07 | 26.9 | 1.32 | 34.3% |
| Aluminum 7075 | 2.81 | 8.43 | 28.1 | 1.379 | 35.8% |
| Size mm | Round kg/m | Square kg/m | Hex kg/m |
|---|---|---|---|
| 6 | 0.076 | 0.097 | 0.084 |
| 8 | 0.136 | 0.173 | 0.15 |
| 10 | 0.212 | 0.27 | 0.234 |
| 12 | 0.305 | 0.389 | 0.337 |
| 16 | 0.543 | 0.691 | 0.599 |
| 20 | 0.848 | 1.08 | 0.935 |
| 25 | 1.325 | 1.688 | 1.461 |
| 30 | 1.909 | 2.43 | 2.104 |
| 40 | 3.393 | 4.32 | 3.741 |
| 50 | 5.301 | 6.75 | 5.846 |
| 60 | 7.634 | 9.72 | 8.418 |
| 80 | 13.572 | 17.28 | 14.965 |
| 100 | 21.206 | 27 | 23.383 |
| 120 | 30.536 | 38.88 | 33.671 |
| 150 | 47.713 | 60.75 | 52.611 |
| 200 | 84.823 | 108 | 93.531 |
Frequently asked questions
What is the density of aluminum?
Pure aluminum is about 2.70 g/cm³ (0.0975 lb/in³). 6061 is about 2.70, 6063 2.69, 5052 2.68 and 7075 2.81. Selecting the alloy keeps the error under about 1%.
How do I weigh an aluminum extrusion?
Regular profiles can be calculated as tube, angle or channel. For complex extrusions use the cross-sectional area or kg/m from the die drawing and multiply by length.
What is the formula for metal weight?
Weight = cross-sectional area × length × density. With millimetres and g/cm³, weight per metre in kg/m = area (mm²) × density ÷ 1000. A Ø20 mm steel bar has 314.16 mm², so 314.16 × 7.85 ÷ 1000 = 2.466 kg/m.
Why does theoretical weight differ from scale weight?
Theoretical weight uses nominal dimensions. Delivered material has thickness or wall tolerances, rolled radii, galvanizing and coatings, typically ±2–5%. State in the contract whether you settle by theoretical or actual weight.
Can I use inches and pounds?
Yes. Switch to inches for dimensions; results always show kg, lb, kg/m and lb/ft. Length can be m, mm, ft or in, and price can be per kg, lb, tonne, metre, foot or piece.
Can I total several items?
Use “Add to list” to collect different materials, shapes and quantities. The list totals weight and cost and can be copied or exported as CSV for quotations and container planning. It is stored only in this browser.
Theoretical weights use nominal dimensions and densities for quoting, shipping and cutting estimates. Settlement weight follows the contract, mill certificate or actual weighing.