Aluminum Weight Calculator
The Aluminum Weight Calculator finds the weight of a rectangular aluminum plate or bar from its length, width and thickness. Weight = volume × density, using aluminum's density of about 2.70 g/cm³.
Formula
Weight = Length × Width × Thickness × Density (2.70 g/cm³)
- Volume = length × width × thickness; dividing by 1000 converts mm³ to cm³.
- Aluminum's density is about 2.70 g/cm³, so weight (g) = volume in cm³ × 2.70.
- Different aluminum alloys vary slightly in density (roughly 2.66–2.80 g/cm³), which changes the weight a little.
- For non-rectangular shapes, work out the cross-sectional area first, then multiply by length and density.
Example Calculation
Inputs
- Length (mm): 1000
- Width (mm): 500
- Thickness (mm): 5
A 1000 × 500 × 5 mm aluminum plate has a volume of 2,500,000 mm³ = 2500 cm³. At 2.70 g/cm³ it weighs 2500 × 2.70 = 6750 g, or 6.75 kg.
Frequently asked questions
How do I calculate the weight of aluminum?
Multiply the volume by aluminum's density (about 2.70 g/cm³). For a plate, volume = length × width × thickness.
What is the density of aluminum?
Roughly 2.70 g/cm³, though specific alloys range from about 2.66 to 2.80 g/cm³.
What units does this use?
Enter dimensions in millimetres; the result is given in grams and kilograms.
Can I use it for bars and sheets?
Yes. Any rectangular section works — just enter its length, width and thickness.
How do I handle other shapes?
Calculate the cross-sectional area of the profile, multiply by length to get the volume, then multiply by 2.70 g/cm³.