Aluminium weight calculator: plate, sheet and round bar
Estimate aluminium sheet, plate, round bar and tube mass from dimensions. Use the nominal 6061 alloy density or supply a grade-specific density.
Aluminium plate mass from dimensions
The reference 6061 aluminium density is 2.70 g/cm³ (2,700 kg/m³). For a plate in mm: mass (kg) = length × width × thickness × 2.70 ÷ 1,000,000. The example uses the same dimensions as the steel example so that the density effect is visible.
Use the right alloy and section
Aluminium alloys are not all identical. Replace the reference density with supplier data when available. A hollow extrusion needs its true cross-sectional area; a circular-tube model cannot calculate an irregular window profile, channel or multi-cavity section accurately.
What this comparison does not imply
Lower mass for the same volume does not imply equal strength, stiffness, corrosion performance or load capacity. Anodizing, protective films, fasteners and cutting waste are not included in the theoretical result.
Dimensions and theoretical material weight
Uses ideal geometry. Density is editable and dimensions are in mm; results are neither manufacturer weighings nor structural checks.
Worked default example
1000 × 500 × 5 mm plate, density 2.7 g/cm³: mass = 1000 × 500 × 5 × 2.7 ÷ 1,000,000 kg. Result: 6.75 kg.
Reference nominal densities, not grade certification
| Material | g/cm³ | kg/m³ |
|---|---|---|
| Carbon steel | 7.85 g/cm³ | 7,850 kg/m³ |
| 304 stainless steel | 7.93 g/cm³ | 7,930 kg/m³ |
| 6061 aluminium | 2.7 g/cm³ | 2,700 kg/m³ |
| Copper | 8.96 g/cm³ | 8,960 kg/m³ |
Source: sumhut built-in material models. These are estimating assumptions, not a published engineering standard or manufacturer guarantee; actual grade, temperature, composition and tolerances may differ.
Choose existing specifications in the original object calculator
Sources and further reading
Calculation basis: solid material geometry × material density, using this site’s reference models. Procurement, lifting, structural capacity, pressure rating and engineering compliance require separate verification.